WO2016015495A1 - 一种霍尔元件密封结构及其应用的电机 - Google Patents

一种霍尔元件密封结构及其应用的电机 Download PDF

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Publication number
WO2016015495A1
WO2016015495A1 PCT/CN2015/077454 CN2015077454W WO2016015495A1 WO 2016015495 A1 WO2016015495 A1 WO 2016015495A1 CN 2015077454 W CN2015077454 W CN 2015077454W WO 2016015495 A1 WO2016015495 A1 WO 2016015495A1
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Prior art keywords
hall
circuit board
cavity
hall element
top surface
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PCT/CN2015/077454
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English (en)
French (fr)
Inventor
于跃强
王雄程
边文清
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Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Priority to CA2934590A priority Critical patent/CA2934590C/en
Priority to MX2016007011A priority patent/MX375636B/es
Priority to US15/009,812 priority patent/US10141809B2/en
Publication of WO2016015495A1 publication Critical patent/WO2016015495A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection

Definitions

  • the utility model relates to a Hall element sealing structure and an electric motor thereof.
  • the Hall circuit board is generally mounted directly on the end insulation of the stator assembly, and the Hall element protrudes downward from the Hall circuit board and detects the position signal of the rotor outside the rotor assembly, but this
  • the Hall element mounting structure is very unreliable, and the Hall board and the Hall element are easily released from the end insulation in the case of motor operation or external environmental vibration.
  • the Hall circuit board and the Hall element are easily affected by dust and water, causing the Hall circuit board or the Hall element to fail, seriously affecting the normal operation of the motor, and replacing the parts. High cost and reduced market competitiveness.
  • the purpose of the utility model is to provide a Hall element sealing structure and a motor for the same, the structure is simple, the installation is convenient and firm, and the sealing and waterproof performance of the Hall circuit board and the Hall element are good, and the work is reliable, the motor
  • the structure is simple, the installation is convenient, the sealing and waterproof performance of the Hall circuit board and the Hall element are good, the work is reliable, and the market competitiveness is large.
  • a Hall element sealing structure comprises a box body, a Hall circuit board and a Hall element mounted on the Hall circuit board, and a cavity is opened in the middle of the box body, characterized in that: the bottom wall of the cavity is arranged Supporting the boss, and forming a mounting groove in the bottom wall of the cavity, the Hall circuit board is supported on the top surface of the supporting boss, and the Hall element on the Hall circuit board extends into the mounting slot, in the empty
  • the cavity is filled with a sealant, and the sealant seals the Hall element inside the mounting groove and the sealant covers the Hall circuit board.
  • the bottom wall of the cavity described above protrudes upwardly from a plurality of columns, and the column is nested inside the through hole of the Hall circuit board.
  • the outer wall of the box body described above is provided with a plurality of mounting feet, and the mounting feet are provided with mounting holes.
  • a motor comprising a rotating shaft, a rotor assembly, a stator assembly, a housing assembly, a housing, and a Hall line a plate and a Hall element, the rotor assembly is mounted on a rotating shaft, and the stator assembly and the outer casing assembly are mounted together and nested outside the rotor assembly, wherein the stator assembly includes a stator core, an end insulation and a coil winding, and the end insulation is mounted on the stator The end of the iron core, the coil winding is wound on the end insulation, the box body is mounted on the end insulation, and a cavity is opened in the middle of the box body, wherein the bottom wall of the cavity is provided with a support boss.
  • the bottom wall of the cavity is recessed to form a mounting groove
  • the Hall circuit board is supported on the top surface of the supporting boss, and the Hall element on the Hall circuit board extends into the mounting groove, and the cavity is filled with the sealing glue
  • the sealant seals the Hall element inside the mounting slot and the sealant covers the Hall board.
  • the outer wall of the casing described above is provided with three mounting legs, and the end insulation comprises an annular yoke portion and a plurality of tooth portions projecting inward from the annular yoke portion, and a wire groove is formed between the adjacent two tooth portions.
  • a left support post and a right support post are respectively protruded upward from the inner surface of one of the welt grooves and the top surfaces of the adjacent two tooth portions, and the first support post protrudes upward from the top surface of the loop groove and the annular yoke portion
  • the casing is mounted on the top surfaces of the first support column, the left support column and the right support column by three mounting feet.
  • the bottom wall of the cavity described above is recessed to form a mounting groove and a convex portion is formed on the bottom surface of the box body, and a left base is arranged on the top surface of the left support column and the top surface of the tooth portion, and at the bottom of the right support column, A right base is disposed on a top surface of the tooth portion, and a card slot is formed between the left base and the right base.
  • the boss is nested inside the card slot and supported on the top surface of the tooth portion, and the Hall element is nested in the mounting slot. Inside and rest on the outside of the rotor assembly.
  • the bottom wall of the cavity described above protrudes upwardly from a plurality of columns, and the column is nested inside the through hole of the Hall circuit board.
  • a support boss is arranged on the bottom wall of the cavity, and a mounting groove is formed in the bottom wall of the cavity, the Hall circuit board is supported on the top surface of the support boss, and the Hall on the Hall circuit board The component protrudes into the mounting groove, and the cavity is filled with a sealant.
  • the sealant seals the Hall element inside the mounting groove and the sealant covers the outside of the Hall circuit board.
  • a plurality of columns are protruded upward from the bottom wall of the cavity, and the column is nested in the through hole of the Hall circuit board Surface, simple structure, convenient positioning and high assembly efficiency;
  • the outer wall of the box body is provided with a plurality of mounting feet, and the mounting feet are provided with mounting holes for conveniently mounting the box body to the stator assembly;
  • the motor has a simple structure and convenient installation, and the sealing and waterproof performance of the Hall circuit board and the Hall element are good, the work is reliable, and the market competitiveness is large;
  • the box body is mounted on the top surfaces of the first support column, the left support column and the right support column by three mounting feet, and has a simple structure, convenient installation and firmness;
  • the bosses are nested inside the card slot and supported on the top surface of the tooth portion.
  • the Hall element is nested inside the mounting groove and rests on the outside of the rotor assembly. The structure is simple, the installation is convenient and firm, and the Hall is effectively guaranteed. The reliability of component operation.
  • Figure 1 is a perspective view of the sealing structure of the Hall element of the present invention.
  • Figure 3 is a plan view of the sealing structure of the Hall element of the present invention.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a perspective view of the motor of the present invention.
  • Figure 6 is an exploded view of the motor of the present invention.
  • Figure 7 is a partial enlarged view of B-B of Figure 6;
  • Figure 8 is a plan view of the motor of the present invention.
  • Figure 9 is a cross-sectional view taken along line C-C of Figure 8.
  • Figure 10 is a partial enlarged view of D-D of Figure 9.
  • Embodiment 1 As shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the utility model relates to a Hall element sealing structure, which comprises a box body 1 , a Hall circuit board 2 and a Hall circuit board 2 .
  • the Hall element 3 is provided with a cavity 10 in the middle of the casing 1, and a support boss 11 is arranged on the bottom wall of the cavity 10, and is empty
  • the bottom wall of the cavity 10 is recessed to form a mounting groove 12, and the Hall circuit board 2 is supported on the top surface of the support boss 11, and the Hall element 3 on the Hall circuit board 2 extends into the mounting groove 12 in the cavity.
  • the inside of the 10 is filled with a sealant 4 which seals the Hall element 3 inside the mounting groove 12 and the sealant 4 covers the outside of the Hall wiring board 2.
  • a plurality of uprights 13 projecting upwardly from the bottom wall of the cavity 10 are embedded in the through holes 21 in the Hall wiring board 2.
  • a plurality of mounting legs 14 are disposed on the outer wall of the casing 1, and mounting holes 140 are formed in the mounting legs 14.
  • Embodiment 2 As shown in FIG. 5 to FIG. 10, the present invention is a motor including a rotating shaft 5, a rotor assembly 6, a stator assembly 7, a housing assembly 8, a casing 1, a Hall circuit board 2, and a Hall element. 3.
  • the outer casing assembly 8 includes a casing 81 and an end cover 82.
  • the rotor assembly 6 is mounted on a rotating shaft 5, and the stator assembly 7 and the casing 81 are mounted together and nested outside the rotor assembly 6, and the end cover 82 is mounted on Both ends of the casing 81 are supported on the bearings of the end cover 82.
  • the stator assembly 7 includes a stator core 71, an end insulation 72 and a coil winding 73.
  • the end insulation 72 is mounted at the end of the stator core 71.
  • the coil winding 73 is wound around the end insulation 72, and the casing 1 is mounted on the end insulation 72, a cavity 10 is opened in the middle of the casing 1, and a support boss 11 is provided on the bottom wall of the cavity 10, and A mounting groove 12 is formed in the bottom wall of the cavity 10, and the Hall circuit board 2 is supported on the top surface of the support boss 11, and the Hall element 3 on the Hall circuit board 2 extends into the mounting groove 12,
  • the cavity 10 is filled with a sealant 4, and the sealant 4 seals the Hall element 3 inside the mounting groove 12 and the sealant 4 covers the Hall. 2 outside of the circuit board.
  • Three mounting legs 14 are provided on the outer wall of the casing 1.
  • the end insulation 72 includes an annular yoke portion 721 and a plurality of tooth portions 722 extending inwardly from the annular yoke portion 721.
  • the wire groove 723 extends upward on the top surface of one of the wire grooves 723 and the top surface of the adjacent two tooth portions 722, respectively, to the left support column 7221 and the right support column 7222, the outer side of the wire groove 723, and the annular yoke portion 721.
  • the first support post 7211 protrudes upward from the top surface, and the casing 1 is supported by the three mounting legs 14 on the top surfaces of the first support post 7211, the left support post 7221 and the right support post 7222.
  • the bottom wall of the cavity 10 is recessed to form a mounting groove 12 and a convex portion 15 is formed on the bottom surface of the casing 1.
  • the top surface of the tooth portion 722 is provided with a left base 7223, which is supported on the right side.
  • the bottom of the column 7222, the top of the tooth 722 A right base 7224 is disposed on the surface, and a latching groove 7225 is formed between the left base 7223 and the right base 7224.
  • the boss 15 is nested and mounted on the top surface of the toothed portion 722 and supported on the top surface of the tooth portion 722. It fits inside the mounting groove 12 and rests on the outside of the rotor assembly 6.
  • a plurality of uprights 13 projecting upwardly from the bottom wall of the cavity 10 are embedded in the through holes 21 in the Hall wiring board 2.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Brushless Motors (AREA)

Abstract

一种霍尔元件密封结构及其应用的电机，霍尔元件密封结构包括盒体（1）、霍尔线路板（2）和安装在霍尔线路板（2）上的霍尔元件（3），在盒体（1）中间开设有空腔（10），在空腔（10）的底壁上设置有支承凸台（11），并且在空腔（10）的底壁凹陷形成一安装槽（12），霍尔线路板（2）支承在支承凸台（11）的顶面上，霍尔线路板（2）上的霍尔元件（3）伸入到安装槽（12）里面，在空腔（10）里面灌注有密封胶（4），密封胶（4）把霍尔元件（3）密封在安装槽（12）里面并且密封胶（4）覆盖在霍尔线路板（2）外面。这种密封结构简单，安装方便、牢固，密封和防水性能好，工作可靠。

Description

一种霍尔元件密封结构及其应用的电机 技术领域：
本实用新型涉及一种霍尔元件密封结构及其应用的电机。
背景技术：
现有的电机之中，霍尔线路板普遍直接安装在定子组件的端部绝缘上，霍尔元件从霍尔线路板上往下伸出并靠在转子组件外侧检测转子的位置信号，但是这种霍尔元件安装结构十分不可靠，在电机运行或者外部环境震动的情况下，霍尔线路板和霍尔元件容易从端部绝缘上松脱。同时由于霍尔线路板和霍尔元件长期暴露在外，霍尔线路板和霍尔元件容易受尘、受水污染造成霍尔线路板或者霍尔元件失效，严重影响电机的正常运行，而且更换零件成本高，降低其市场竞争力。
发明内容：
本实用新型的目的是提供一种霍尔元件密封结构及其应用的电机，该结构简单，安装方便、牢固，而且霍尔线路板和霍尔元件的密封和防水性能好，工作可靠，该电机结构简单，安装方便，霍尔线路板和霍尔元件的密封和防水性能好，工作可靠，具有较大的市场竞争力。
本实用新型的目的是通过下述技术方案予以实现的。
一种霍尔元件密封结构，包括盒体、霍尔线路板和安装在霍尔线路板上的霍尔元件，在盒体中间开设有空腔，其特征在于：在空腔的底壁上设置有支承凸台，并且在空腔的底壁凹陷形成一安装槽，霍尔线路板支承在支承凸台的顶面上，霍尔线路板上的霍尔元件伸入到安装槽里面，在空腔里面灌注有密封胶，密封胶把霍尔元件密封在安装槽里面并且密封胶覆盖在霍尔线路板外面。
上述所述的空腔的底壁上往上伸出若干立柱，立柱嵌套在霍尔线路板上的通孔里面。
上述所述的盒体的外壁设置有若干安装脚，安装脚上开设有安装孔。
一种电机，包括转轴、转子组件、定子组件、外壳组件、盒体、霍尔线路 板和霍尔元件，转子组件安装在转轴上，定子组件和外壳组件安装在一起并嵌套在转子组件外面，其中定子组件包括定子铁芯、端部绝缘和线圈绕组，端部绝缘安装在定子铁芯端部，线圈绕组卷绕在端部绝缘上，盒体安装在端部绝缘上，在盒体中间开设有空腔，其特征在于：在空腔的底壁上设置有支承凸台，并且空腔的底壁凹陷形成一安装槽，霍尔线路板支承在支承凸台的顶面上，霍尔线路板上的霍尔元件伸入到安装槽里面，在空腔里面灌注有密封胶，密封胶把霍尔元件密封在安装槽里面并且密封胶覆盖在霍尔线路板外面。
上述所述的盒体的外壁设置有3个安装脚，端部绝缘包括环形轭部和从环形轭部往内伸出的若干齿部，相邻两个齿部之间形成嵌线槽，在某一个嵌线槽内侧、相邻两个齿部的顶面上分别往上伸出左支承柱和右支承柱，嵌线槽外侧、环形轭部的顶面上往上伸出第一支承柱，盒体通过3个安装脚支承安装在第一支承柱、左支承柱和右支承柱的顶面上。
上述所述的空腔的底壁凹陷形成一安装槽并在盒体的底面上形成一凸起部，在左支承柱底部、齿部的顶面上设置有左底座，在右支承柱底部、齿部的顶面上设置有右底座，左底座和右底座之间形成卡槽，凸起部嵌套安装在卡槽里面并支承在齿部的顶面上，霍尔元件嵌套在安装槽里面并靠在转子组件外侧。
上述所述的空腔的底壁上往上伸出若干立柱，立柱嵌套在霍尔线路板上的通孔里面。
本实用新型与现有技术相比，具有如下效果：
1)在空腔的底壁上设置有支承凸台，并且在空腔的底壁凹陷形成一安装槽，霍尔线路板支承在支承凸台的顶面上，霍尔线路板上的霍尔元件伸入到安装槽里面，在空腔里面灌注有密封胶，密封胶把霍尔元件密封在安装槽里面并且密封胶覆盖在霍尔线路板外面，该结构简单，安装方便、牢固，霍尔线路板和霍尔元件被密封住，有效提高其密封和防水性能，避免受到杂质污染导致损坏，保证霍尔线路板和霍尔元件可靠地工作；
2)空腔的底壁上往上伸出若干立柱，立柱嵌套在霍尔线路板上的通孔里 面，结构简单，定位方便，装配效率高；
3)盒体的外壁设置有若干安装脚，安装脚上开设有安装孔，方便把盒体安装到定子组件上；
4)该电机结构简单，安装方便，霍尔线路板和霍尔元件的密封和防水性能好，工作可靠，具有较大的市场竞争力；
5)盒体通过3个安装脚支承安装在第一支承柱、左支承柱和右支承柱的顶面上，结构简单，安装方便、牢靠；
6)凸起部嵌套安装在卡槽里面并支承在齿部的顶面上，霍尔元件嵌套在安装槽里面并靠在转子组件外侧，结构简单，安装方便、牢固，有效保证霍尔元件工作的可靠性。
附图说明：
图1是本实用新型霍尔元件密封结构的立体图；
图2是本实用新型霍尔元件密封结构的分解图；
图3是本实用新型霍尔元件密封结构的俯视图；
图4是图3中A-A剖视图；
图5是本实用新型电机的立体图；
图6是本实用新型电机的分解图；
图7是图6中B-B局部放大图；
图8是本实用新型电机的俯视图；
图9是图8中C-C剖视图；
图10是图9中D-D局部放大图。
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、图2、图3和图4所示，本实用新型是一种霍尔元件密封结构，包括盒体1、霍尔线路板2和安装在霍尔线路板2上的霍尔元件3，在盒体1中间开设有空腔10，在空腔10的底壁上设置有支承凸台11，并且在空 腔10的底壁凹陷形成一安装槽12，霍尔线路板2支承在支承凸台11的顶面上，霍尔线路板2上的霍尔元件3伸入到安装槽12里面，在空腔10里面灌注有密封胶4，密封胶4把霍尔元件3密封在安装槽12里面并且密封胶4覆盖在霍尔线路板2外面。
在空腔10的底壁上往上伸出若干立柱13，立柱13嵌套在霍尔线路板2上的通孔21里面。在盒体1的外壁设置有若干安装脚14，安装脚14上开设有安装孔140。
实施例二：如图5至图10所示，本实用新型是一种电机，包括转轴5、转子组件6、定子组件7、外壳组件8、盒体1、霍尔线路板2和霍尔元件3，所述的外壳组件8包括机壳81和端盖82，转子组件6安装在转轴5上，定子组件7和机壳81安装在一起并嵌套在转子组件6外面，端盖82安装在机壳81两端，转轴两端支承在端盖82的轴承上，其中定子组件7包括定子铁芯71、端部绝缘72和线圈绕组73，端部绝缘72安装在定子铁芯71端部，线圈绕组73卷绕在端部绝缘72上，盒体1安装在端部绝缘72上，在盒体1中间开设有空腔10，在空腔10的底壁上设置有支承凸台11，并且在空腔10的底壁凹陷形成一安装槽12，霍尔线路板2支承在支承凸台11的顶面上，霍尔线路板2上的霍尔元件3伸入到安装槽12里面，在空腔10里面灌注有密封胶4，密封胶4把霍尔元件3密封在安装槽12里面并且密封胶4覆盖在霍尔线路板2外面。在盒体1的外壁设置有3个安装脚14，端部绝缘72包括环形轭部721和从环形轭部721往内伸出的若干齿部722，相邻两个齿部722之间形成嵌线槽723，在某一个嵌线槽723内侧、相邻两个齿部722的顶面上分别往上伸出左支承柱7221和右支承柱7222，嵌线槽723外侧、环形轭部721的顶面上往上伸出第一支承柱7211，盒体1通过3个安装脚14支承安装在第一支承柱7211、左支承柱7221和右支承柱7222的顶面上。空腔10的底壁凹陷形成一安装槽12并在盒体1的底面上形成一凸起部15，在左支承柱7221底部、齿部722的顶面上设置有左底座7223，在右支承柱7222底部、齿部722的顶 面上设置有右底座7224，左底座7223和右底座7224之间形成卡槽7225，凸起部15嵌套安装在卡槽7225里面并支承在齿部722的顶面上，霍尔元件3嵌套在安装槽12里面并靠在转子组件6外侧。在空腔10的底壁上往上伸出若干立柱13，立柱13嵌套在霍尔线路板2上的通孔21里面。
以上实施例为本发明的较佳实施方式，但本发明的实施方式不限于此，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本发明的保护范围之内。

Claims (7)

  1. 一种霍尔元件密封结构，包括盒体(1)、霍尔线路板(2)和安装在霍尔线路板(2)上的霍尔元件(3)，在盒体(1)中间开设有空腔(10)，其特征在于：在空腔(10)的底壁上设置有支承凸台(11)，并且在空腔(10)的底壁凹陷形成一安装槽(12)，霍尔线路板(2)支承在支承凸台(11)的顶面上，霍尔线路板(2)上的霍尔元件(3)伸入到安装槽(12)里面，在空腔(10)里面灌注有密封胶(4)，密封胶(4)把霍尔元件(3)密封在安装槽(12)里面并且密封胶(4)覆盖在霍尔线路板(2)外面。
  2. 根据权利要求1所述的一种霍尔元件密封结构，其特征在于：在空腔(10)的底壁上往上伸出若干立柱(13)，立柱(13)嵌套在霍尔线路板(2)上的通孔(21)里面。
  3. 根据权利要求1或2所述的一种霍尔元件密封结构，其特征在于：在盒体(1)的外壁设置有若干安装脚(14)，安装脚(14)上开设有安装孔(140)。
  4. 一种电机，包括转轴(5)、转子组件(6)、定子组件(7)、外壳组件(8)、盒体(1)、霍尔线路板(2)和霍尔元件(3)，转子组件(6)安装在转轴(5)上，定子组件(7)和外壳组件(8)安装在一起并嵌套在转子组件(6)外面，其中定子组件(7)包括定子铁芯(71)、端部绝缘(72)和线圈绕组(73)，端部绝缘(72)安装在定子铁芯(71)端部，线圈绕组(73)卷绕在端部绝缘(72)上，盒体(1)安装在端部绝缘(72)上，在盒体(1)中间开设有空腔(10)，其特征在于：在空腔(10)的底壁上设置有支承凸台(11)，并且在空腔(10)的底壁凹陷形成一安装槽(12)，霍尔线路板(2)支承在支承凸台(11)的顶面上，霍尔线路板(2)上的霍尔元件(3)伸入到安装槽(12)里面，在空腔(10)里面灌注有密封胶(4)，密封胶(4)把霍尔元件(3)密封在安装槽(12)里面并且密封胶(4)覆盖在霍尔线路板(2)外面。
  5. 根据权利要求4所述的一种电机，其特征在于：在盒体(1)的外壁设置有3个安装脚(14)，端部绝缘(72)包括环形轭部(721)和从环形轭部(721) 往内伸出的若干齿部(722)，相邻两个齿部(722)之间形成嵌线槽(723)，在某一个嵌线槽(723)内侧、相邻两个齿部(722)的顶面上分别往上伸出左支承柱(7221)和右支承柱(7222)，嵌线槽(723)外侧、环形轭部(721)的顶面上往上伸出第一支承柱(7211)，盒体(1)通过3个安装脚(14)支承安装在第一支承柱(7211)、左支承柱(7221)和右支承柱(7222)的顶面上。
  6. 根据权利要求5所述的一种电机，其特征在于：空腔(10)的底壁凹陷形成一安装槽(12)并在盒体(1)的底面上形成一凸起部(15)，在左支承柱(7221)底部、齿部(722)的顶面上设置有左底座(7223)，在右支承柱(7222)底部、齿部(722)的顶面上设置有右底座(7224)，左底座(7223)和右底座(7224)之间形成卡槽(7225)，凸起部(15)嵌套安装在卡槽(7225)里面并支承在齿部(722)的顶面上，霍尔元件(3)嵌套在安装槽(12)里面并靠在转子组件(6)外侧。
  7. 根据权利要求4或5或6所述的一种电机，其特征在于：在空腔(10)的底壁上往上伸出若干立柱(13)，立柱(13)嵌套在霍尔线路板(2)上的通孔(21)里面。
PCT/CN2015/077454 2014-05-29 2015-04-24 一种霍尔元件密封结构及其应用的电机 Ceased WO2016015495A1 (zh)

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CN204030868U (zh) * 2014-07-30 2014-12-17 中山大洋电机股份有限公司 一种霍尔元件密封结构及其应用的电机
US10141809B2 (en) 2014-05-29 2018-11-27 Zhongshan Broad-Ocean Motor Co., Ltd. Motor controller and motor comprising the same
JP6286617B2 (ja) * 2015-10-28 2018-02-28 デンソートリム株式会社 内燃機関用回転電機
CN111064301B (zh) * 2020-01-07 2024-12-06 常州祥明智能动力股份有限公司 一种外转子电机
CN111725950B (zh) * 2020-07-14 2021-11-09 小狗电器互联网科技（北京）股份有限公司 一种风机及吸尘器
CN115333299B (zh) * 2022-10-11 2022-12-23 常州祥明智能动力股份有限公司 一种霍尔线路板密封结构及外转子电机

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