WO2013177886A1 - 一种霍尔元件感应的直流无刷电机结构 - Google Patents

一种霍尔元件感应的直流无刷电机结构 Download PDF

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Publication number
WO2013177886A1
WO2013177886A1 PCT/CN2012/082635 CN2012082635W WO2013177886A1 WO 2013177886 A1 WO2013177886 A1 WO 2013177886A1 CN 2012082635 W CN2012082635 W CN 2012082635W WO 2013177886 A1 WO2013177886 A1 WO 2013177886A1
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WO
WIPO (PCT)
Prior art keywords
hall
end cover
magnetic ring
hall element
circuit board
Prior art date
Application number
PCT/CN2012/082635
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English (en)
French (fr)
Inventor
唐松发
曾建华
刘先军
Original Assignee
中山大洋电机股份有限公司
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 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 WO2013177886A1 publication Critical patent/WO2013177886A1/zh
Priority to US14/192,779 priority Critical patent/US20140175957A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles

Definitions

  • the utility model relates to a structure of a DC brushless motor induced by a Hall element. Background technique:
  • the existing brushless motor (BLDC MOTOR) of the Hall element is usually used in the following two ways.
  • the first method is to mount the magnetic ring on the rotor end bracket, and the Hall circuit board is fixed on the end insulation of the stator.
  • the second way the induction magnetic ring is removed from the rotor and mounted on the rotating shaft, and then the Hall plate is fixed on the rear end cover.
  • the first structure is assembled and the reliability is poor, the Hall circuit board is easy to fall off, and the installation is troublesome.
  • the second structure Hall circuit board assembly positioning is troublesome. Summary of the invention:
  • the purpose of the utility model is to provide a structure of a DC brushless motor which is induced by a Hall element.
  • the structure is simple, the assembly cylinder is easy, the connection is firm, the reliability is good, and the positioning is easy and accurate.
  • the object of the present invention is achieved by the following technical solutions.
  • a Hall element-inducing brushless DC motor structure comprising a casing, a stator assembly, a rotor assembly, a front end cover, a rear end cover, a magnetic ring, a circuit board and a Hall element, the stator assembly being nested outside the rotor assembly, the machine
  • the shell and the stator assembly are coupled together, and the front end cover and the rear end cover are mounted at both ends of the casing, and the rotor assembly includes a rotor core and a magnetic ring bracket mounted at an end of the rotor core, and the magnetic ring is mounted on the magnetic ring bracket, the circuit board Mounted on the end face of the front end cover or the rear end cover, the Hall plate is mounted with a Hall mount, and the Hall element is mounted on the Hall mount and protrudes into the case on the side of the magnetic ring.
  • the stator assembly described above comprises a stator core and an end insulation installed at an end of the stator core, and the end insulation protrudes upwardly from a plurality of positioning columns, and the Hall holder protrudes downwardly from a plurality of connecting columns, and the tail portion of the connecting column is provided There is a groove, and the positioning post is embedded in the groove.
  • the circuit board described above is locked to the rear end cover by screws.
  • the Hall holder and the connecting post described above are integrally injection molded.
  • the utility model has the beneficial effects compared with the prior art: 1)
  • the magnetic ring of the utility model is mounted on the magnetic ring bracket at the end of the rotor core, and the circuit board is mounted on the end surface of the front end cover or the rear end cover, and the circuit board Hall mounting is installed, Hall element is mounted on the Hall holder and protrudes into the casing on the side of the magnetic ring.
  • the structure is simple, the assembly cylinder is easy, the connection is firm, the reliability is good, the positioning is easy and accurate.
  • the Hall holder protrudes downwardly from a plurality of connecting columns.
  • the tail of the connecting column is provided with a groove, and the end insulation protrudes upwardly into the positioning post and is embedded in the groove to ensure accurate positioning relationship between the Hall element and the stator winding.
  • the circuit board is locked on the rear end cover by screws, only need to make one screw, assemble the single tube, and the reliability is good, and realize the axial positioning of the circuit board; 4) Hall fixing
  • the frame and the connecting post are integrally injection molded, which is suitable for mass production and low cost.
  • Figure 1 is a perspective view of the utility model
  • Figure 2 is an exploded view of the utility model
  • Figure 3 is a schematic structural view of the utility model
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a cross-sectional view taken along line B-B of Figure 3;
  • Figure 6 is a partial enlarged view of C-C in Figure 5;
  • Figure 7 is an exploded view of the stator assembly, Hall mount and circuit board of the present invention.
  • Embodiment 1 As shown in FIG. 1 to FIG. 7 , the utility model relates to a Hall brush-induction DC brushless motor structure, which comprises a casing 1 , a stator assembly 2 , a rotor assembly 3 , a front end cover 4 , and a rear end cover . 5.
  • the magnetic ring 6, the circuit board 7 and the Hall element 8, the stator assembly 2 is nested outside the rotor assembly 3, and the casing 1 Together with the stator assembly 2, the front end cover 4 and the rear end cover 5 are mounted at both ends of the casing 1, and the rotor assembly 3 includes a rotor core 31 and a magnetic ring bracket 32 mounted at the end of the rotor core 31, and the magnetic ring 6 is mounted.
  • the circuit board 7 is mounted on the end surface of the front end cover 4 or the rear end cover 5, and the circuit board 7 is mounted with a Hall mount 71, and the Hall element 8 is mounted on the Hall mount 71 and protrudes
  • the casing 1 is located on the side of the magnetic ring 6.
  • Embodiment 2 As shown in FIG. 6 and FIG. 7, the following technical features are added on the basis of Embodiment 1:
  • the stator assembly 2 includes a stator core 21 and an end insulation 22 mounted at the end of the stator core 21, and the end portion
  • the insulating member 22 protrudes upwardly from the positioning post 220.
  • the Hall mounting bracket 71 protrudes downwardly from the connecting post 710.
  • the tail of the connecting post 710 is provided with a recess 711, and the positioning post 220 is embedded in the recess 711.
  • Embodiment 3 As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 , the following technical features are added on the basis of Embodiment 1 or Embodiment 2: The circuit board 7 is locked to the rear end cover by screws 9 5 on.
  • Embodiment 4 As shown in FIG. 1 to FIG. 7, the following technical features are added on the basis of the second embodiment: the Hall holder 71 and the connecting post 710 are integrally injection molded.
  • Embodiment 2 Since the present application is in the field of mechanics, it will be obvious to those skilled in the art that: Embodiment 2, Embodiment 3, and the added technical features mentioned in Embodiment 4 are freely combined, and the technical solution of Embodiment 1 is combined into a new technical solution.
  • the assembly process of the circuit board of the present invention is as follows: firstly, the Hall holder 71 is mounted on the circuit board 7, and the Hall holder 71 protrudes downwardly from a plurality of connecting columns 710, and the tail of the connecting column 710 is provided with a groove 711, the stator
  • the positioning post 220 protruding from the end insulation 22 is embedded in the groove 711 to ensure the precise positioning relationship between the Hall element 8 and the stator winding, thereby realizing the circumferential positioning of the circuit board 7, and then locking the circuit board 7 by the screw 9. It is tight on the end face of the rear end cover 5.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

一种霍尔元件感应的直流无刷电机结构，包括机壳（1）、定子组件（2）、转子组件（3）、前端盖（4）、后端盖（5）、磁环（6）、线路板（7）和霍尔元件（8）。定子组件嵌套在转子组件外，机壳和定子组件连接一起。前端盖和后端盖安装在机壳两端。转子组件包括转子铁芯（31）和安装在转子铁芯端部的磁环支架（32），磁环安装在磁环支架上。线路板安装在前端盖或后端盖端面上，线路板上安装有霍尔固定架（71），霍尔元件安装在霍尔固定架上并伸入机壳里位于磁环的侧边。该直流无刷电机结构简单，装配简易，连接牢固，可靠性好，定位容易、准确。

Description

一种霍尔元件感应的直流无刷电机结构
技术领域：
本实用新型涉及一种霍尔元件感应的直流无刷电机结构。 背景技术：
现有霍尔元件感应的直流无刷电机（BLDC MOTOR) , 通常采用以下两种方 式， 第一种方式将磁环安装在转子端部支架上， 霍尔线路板固定在定子的端 部绝缘上， 第二种方式将感应磁环移出转子安装在转轴上， 然后将霍尔板固 定在后端盖上， 第一种结构装配和可靠性较差， 霍尔线路板容易脱落， 且安 装麻烦， 第二种结构霍尔线路板装配定位麻烦。 发明内容：
本实用新型的目的是提供一种霍尔元件感应的直流无刷电机结构， 该结 构筒单， 装配筒易， 连接牢固， 可靠性好， 定位容易、 准确。 本实用新型的目的是通过以下的技术方案予以实现的。
一种霍尔元件感应的直流无刷电机结构， 包括机壳、 定子组件、 转子组 件、 前端盖、 后端盖、 磁环、 线路板和霍尔元件， 定子组件嵌套在转子组件 外， 机壳和定子组件连接一起， 前端盖和后端盖安装在机壳两端， 转子组件 包括转子铁芯和安装在转子铁芯端部的磁环支架， 磁环安装在磁环支架上， 线路板安装在前端盖或后端盖端面上， 线路板上安装有霍尔固定架， 霍尔元 件安装在霍尔固定架上并伸入机壳里位于磁环的侧边。
上述所述的定子组件包括定子铁芯和安装在定子铁芯端部的端部绝缘， 端部绝缘向上凸出若干定位柱， 霍尔固定架向下凸出若干连接柱， 连接柱的 尾部设有凹槽， 定位柱嵌入凹槽里。
上述所述的线路板通过螺釘锁紧在后端盖上。 上述所述的霍尔固定架和连接柱一体注塑成型的。
本实用新型与现有技术相比的有益效果是： 1 )本实用新型磁环安装在转 子铁芯端部的磁环支架上， 线路板安装在前端盖或后端盖端面上， 线路板上 安装有霍尔固定架， 霍尔元件安装在霍尔固定架上并伸入机壳里位于磁环的 侧边， 该结构筒单， 装配筒易， 连接牢固， 可靠性好， 定位容易、 准确； 2 ) 霍尔固定架向下凸出若干连接柱， 连接柱的尾部设有凹槽， 端部绝缘向上凸 出定位柱嵌入 槽里， 保证霍尔元件与定子绕组之间精确定位对应关系， 实 现线路板的周向定位； 3 )线路板通过螺釘锁紧在后端盖上，只需打一颗螺釘， 装配筒单， 可靠性好， 实现线路板的轴向定位； 4 )霍尔固定架和连接柱一体 注塑成型的， 适用批量生产， 成本低廉。
附图说明：
图 1 是实用新型的立体图；
图 2 是实用新型的分解图；
图 3 是本实用新型的结构示意图；
图 4 是图 3的 A-A部分剖视图；
图 5 是图 3的 B-B部分剖视图；
图 6 是图 5中 C-C局部放大图；
图 7是本实用新型的定子组件、 霍尔固定架和线路板的分解图。
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。 实施例一： 如图 1至图 7所示， 本实用新型是一种霍尔元件感应的直流 无刷电机结构， 包括机壳 1、 定子组件 2、 转子组件 3、 前端盖 4、 后端盖 5、 磁环 6、 线路板 7和霍尔元件 8 , 定子组件 2嵌套在转子组件 3外， 机壳 1 和定子组件 2连接一起， 前端盖 4和后端盖 5安装在机壳 1两端， 转子组件 3包括转子铁芯 31和安装在转子铁芯 31端部的磁环支架 32 , 磁环 6安装在 磁环支架 32上，线路板 7安装在前端盖 4或后端盖 5端面上，线路板 7上安 装有霍尔固定架 71 , 霍尔元件 8安装在霍尔固定架 71上并伸入机壳 1里位 于磁环 6的侧边。
实施例二：如图 6和图 7所示，在实施例一的基础上增加如下技术特征： 定子组件 2包括定子铁芯 21和安装在定子铁芯 21端部的端部绝缘 22 ,端部 绝缘 22向上凸出若干定位柱 220 , 霍尔固定架 71向下凸出若干连接柱 710 , 连接柱 710的尾部设有凹槽 711 , 定位柱 220嵌入凹槽 711里。
实施例三： 如图 1、 图 2、 图 3、 图 5和图 6所示， 在实施例一或实施例 二的基础上增加如下技术特征： 线路板 7通过螺釘 9锁紧在后端盖 5上。
实施例四：如图 1至图 7所示，在实施例二的基础上增加如下技术特征： 霍尔固定架 71和连接柱 710一体注塑成型的。
由于本申请是机械领域， 本领普通技术人员显而易见联想得到： 实施例 二、 实施例三、 实施例四提及的增加的技术特征自由组合， 与实施例一的技 术方案组合成新的技术方案。
本实用新型线路板的装配过程如下：先将霍尔固定架 71安装在线路板 7 上，霍尔固定架 71向下凸出若干连接柱 710 ,连接柱 710的尾部设有凹槽 711 , 定子端部绝缘 22凸出的定位柱 220嵌入凹槽 711里，保证霍尔元件 8与定子 绕组之间精确定位对应关系， 实现线路板 7的周向定位， 然后再通过螺釘 9 将线路板 7锁紧在后端盖 5端面上。

Claims

权利要求
1. 一种霍尔元件感应的直流无刷电机结构， 包括机壳 （1)、 定子组件（2)、 转子组件（ 3 )、 前端盖（ 4 )、 后端盖 （ 5 )、 磁环（ 6 )、 线路板（ 7 )和霍 尔元件 （ 8 ), 定子组件（ 2 )嵌套在转子组件（ 3 )外， 机壳 （ 1 )和定子 组件（ 2 )连接一起， 前端盖 （ 4 )和后端盖（ 5 )安装在机壳 （ 1 ) 两端， 转子组件（ 3 ) 包括转子铁芯 （ 31 )和安装在转子铁芯 （ 31 )端部的磁环 支架（ 32 ), 磁环 （ 6 )安装在磁环支架（ 32 )上， 其特征在于： 线路板
( 7 )安装在前端盖 （ 4 )或后端盖 （ 5 )端面上， 线路板 ( 7 )上安装有 霍尔固定架（71 ), 霍尔元件 （8 )安装在霍尔固定架 （71 )上并伸入机 壳 （ 1 )里位于磁环 （ 6 ) 的侧边。
2. 根据权利要求 1 所述的一种霍尔元件感应的直流无刷电机结构， 其特征 在于： 定子组件（ 2 ) 包括定子铁芯 （ 21 )和安装在定子铁芯 （ 21 )端部 的端部绝缘（22), 端部绝缘（22) 向上凸出若干定位柱（ 220 ), 霍尔固 定架（71 ) 向下凸出若干连接柱 (710), 连接柱 ( 710) 的尾部设有凹槽
(711 ), 定位柱（ 220 )嵌入凹槽（711 )里。
3. 根据权利要求 1或 2所述的一种霍尔元件感应的直流无刷电机结构， 其 特征在于： 线路板 ( 7 )通过螺釘（ 9 )锁紧在后端盖（ 5 )上。
4. 根据权利要求 2所述的一种霍尔元件感应的直流无刷电机结构， 其特征 在于： 霍尔固定架（71 )和连接柱（710)—体注塑成型的。
PCT/CN2012/082635 2012-05-30 2012-10-09 一种霍尔元件感应的直流无刷电机结构 WO2013177886A1 (zh)

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Application Number Priority Date Filing Date Title
US14/192,779 US20140175957A1 (en) 2012-05-30 2014-02-27 Rotor assembly and brushless dc motor comprising the same

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CN 201220252859 CN202634229U (zh) 2012-05-30 2012-05-30 一种霍尔元件感应的直流无刷电机结构
CN201220252859.8 2012-05-30

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