CN103915970B - 混合式步进电机 - Google Patents

混合式步进电机 Download PDF

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Publication number
CN103915970B
CN103915970B CN201310007662.7A CN201310007662A CN103915970B CN 103915970 B CN103915970 B CN 103915970B CN 201310007662 A CN201310007662 A CN 201310007662A CN 103915970 B CN103915970 B CN 103915970B
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stator
enamelled wire
motor
backplate
stator core
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CN201310007662.7A
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CN103915970A (zh
Inventor
吴永松
张羽
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Shanghai Moons Electric Co Ltd
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Shanghai Moons Electric Co Ltd
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Priority to CN201310007662.7A priority Critical patent/CN103915970B/zh
Priority to US14/759,893 priority patent/US20150357894A1/en
Priority to PCT/CN2014/070144 priority patent/WO2014108051A1/zh
Publication of CN103915970A publication Critical patent/CN103915970A/zh
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K37/00Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K37/00Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K37/18Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures of homopolar type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/04Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/30Windings characterised by the insulating material
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/52Fastening salient pole windings or connections thereto
    • H02K3/521Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2203/00Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12Machines characterised by the bobbins for supporting the windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种混合式步进电机,包括前端盖、后端盖、转轴、转子、定子、前轴承、后轴承和磁钢;其中的定子为注塑定子,在定子铁心内设有多个用于承载漆包线绕组的注塑骨架,各注塑骨架内侧分别设有漆包线护板,各漆包线护板的内缘形成定子的内孔,各漆包线护板作为电机装配的止口。在相同电机厚度的情况下,采用本发明的电机可以提高15%~45%的力矩;在相同力矩的情况下,采用本发明的电机可以缩短10%~15%的厚度,从而降低电机运转时的铁损。

Description

混合式步进电机
技术领域
本发明涉及电机,尤其涉及一种混合式步进电机。
背景技术
混合式步进电机(以下简称电机)前后端盖与定子铁心以及转子的定位方式有两种:外止口和内止口。
外止口电机的基本结构如图1所示,包括前端盖1、后端盖2、转轴3、转子4、定子5、前轴承6、后轴承7和磁钢8。由前端盖1和后端盖2的止口11、21与定子铁心5的外园装配,端盖的轴承室定位转子,使得转子处于定子铁心内孔的中心位置。因为混合式步进电机的气隙往往在单边0.03~0.05mm左右,外止口电机要求定子铁心的内孔和外圆满足非常高的同心度要求(同心度0.015左右.),如上述同心度不佳,极易造成电机卡死,噪音大,寿命缩短的后果。
内止口电机的基本结构如图2所示,包括前端盖1、后端盖2、转轴3、转子4、定子5、前轴承6、后轴承7和磁钢8。由端盖轴承室的内壁上的止口12、22直接与定子铁心的内孔配合,理论上减少了一道加工公差的传递,能大大地提高电机的装配质量,不过由于止口直接与定子内孔接触,为满足强度要求,需要伸进定子铁心内孔约1.5~2.5mm,因此对于同一系列规格的电机,在相同转子长度的情况下,内止口电机的定子铁心会比外止口电机的定子铁心加厚大约3~5mm(前后端盖),在一定程度上不能满足客户对于电机小型化的要求。
发明内容
本发明的目的,就是为了解决上述现有技术存在的问题,提供一种混合式步进电机。
为了达到上述目的,本发明采用了以下技术方案:一种混合式步进电机,包括前端盖、后端盖、转轴、转子、定子、前轴承、后轴承和磁钢;所述定子为注塑定子,在定子铁心内设有多个用于承载漆包线绕组的注塑骨架,各注塑骨架内侧分别设有漆包线护板,各漆包线护板的内缘形成定子的内孔,各漆包线护板作为电机装配的止口。
所述漆包线护板为圆弧形框架结构件,由两根圆弧形条和连接在两根圆弧形条之间的多根轴向条构成,两根圆弧形条的两端分别设有坡口。
所述漆包线护板的轴向长度大于定子铁心的厚度并且向定子铁心的两侧伸出。
本发明由于采用了以上技术方案,具有以下的优点和特点:
1、在相同电机厚度的情况下,采用本发明的电机可以提高15%~45%的力矩;在相同力矩的情况下,采用本发明的电机可以缩短10%~15%的厚度。
2、由于采用本发明的电机可以缩短定子铁心的厚度且保证力矩,从而降低电机运转时的铁损。
附图说明
图1是现有技术外止口电机的结构示意图;
图2是现有技术内止口电机的结构示意图;
图3是本发明混合式步进电机的结构示意图;
图4是本发明中的注塑定子的基本结构示意图。
具体实施方式
参见图3、图4,本发明混合式步进电机,包括前端盖1、后端盖2、转轴3、转子4、定子5、前轴承6、后轴承7和磁钢8;其中的定子5为注塑定子,在定子铁心51内设有多个用于承载漆包线绕组的注塑骨架52,各注塑骨架内侧分别设有漆包线护板53,各漆包线护板53的内缘形成定子的内孔54,各漆包线护板作为电机装配的止口。
本发明中的漆包线护板53为圆弧形框架结构件,由两根圆弧形条和连接在两根圆弧形条之间的多根轴向条构成,两根圆弧形条的两端分别设有坡口。该漆包线护板的轴向长度大于定子铁心的厚度并且向定子铁心的两侧伸出。
本发明在现有技术内止口电机优点的基础上,通过在定子铁心注塑骨架,利用骨架上的漆包线护板结构作为电机装配的止口。因为此护板结构是漆包线绕组绕线时的必须结构,因此不影响端盖与绕组之间的空间,从而缩短原内止口电机的厚度。

Claims (2)

1.一种混合式步进电机,包括前端盖、后端盖、转轴、转子、定子、前轴承、后轴承和磁钢;其特征在于:所述定子为注塑定子,在定子铁心内设有多个用于承载漆包线绕组的注塑骨架,各注塑骨架内侧分别设有漆包线护板,各漆包线护板的内缘形成定子的内孔,各漆包线护板作为电机装配的止口;
所述漆包线护板为圆弧形框架结构件,由两根圆弧形条和连接在两根圆弧形条之间的多根轴向条构成,两根圆弧形条的两端分别设有坡口。
2.根据权利要求1所述的混合式步进电机,其特征在于:所述漆包线护板的轴向长度大于定子铁心的厚度并且向定子铁心的两侧伸出。
CN201310007662.7A 2013-01-09 2013-01-09 混合式步进电机 Active CN103915970B (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201310007662.7A CN103915970B (zh) 2013-01-09 2013-01-09 混合式步进电机
US14/759,893 US20150357894A1 (en) 2013-01-09 2014-01-06 Hybrid stepping motor
PCT/CN2014/070144 WO2014108051A1 (zh) 2013-01-09 2014-01-06 混合式步进电机

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CN201310007662.7A CN103915970B (zh) 2013-01-09 2013-01-09 混合式步进电机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106571727A (zh) * 2015-10-12 2017-04-19 德昌电机(深圳)有限公司 一种两相步进电机
CN106208454A (zh) * 2016-08-29 2016-12-07 贵州航天林泉电机有限公司 一种超小气隙微型步进电机
CN109245339A (zh) * 2017-07-11 2019-01-18 上海鸣志电器股份有限公司 一种步进电机定子及具有该定子的电机
CN107437883A (zh) * 2017-08-22 2017-12-05 宁波鼎祥电器制造有限公司 步进电机
US10958146B2 (en) * 2019-03-25 2021-03-23 Lin Engineering, Inc. Low detent torque hybrid step motor

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CN102142727A (zh) * 2010-01-29 2011-08-03 浙江三花股份有限公司 电磁线圈及其制造方法和步进电机
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US20150357894A1 (en) 2015-12-10
WO2014108051A1 (zh) 2014-07-17

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