WO2014000348A1 - 一种转子组件 - Google Patents

一种转子组件 Download PDF

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Publication number
WO2014000348A1
WO2014000348A1 PCT/CN2012/082648 CN2012082648W WO2014000348A1 WO 2014000348 A1 WO2014000348 A1 WO 2014000348A1 CN 2012082648 W CN2012082648 W CN 2012082648W WO 2014000348 A1 WO2014000348 A1 WO 2014000348A1
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WO
WIPO (PCT)
Prior art keywords
magnetic ring
plate
rotor assembly
magnetic
assembly according
Prior art date
Application number
PCT/CN2012/082648
Other languages
English (en)
French (fr)
Inventor
唐松发
曾崇生
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 WO2014000348A1 publication Critical patent/WO2014000348A1/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
    • 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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
    • 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

Definitions

  • the utility model relates to a rotor assembly, belonging to the field of a DC brushless motor.
  • the rotor assembly of a conventional DC brushless motor generally includes a rotor core, a permanent magnet, a magnetic ring bracket and a magnetic ring.
  • the permanent magnet is mounted on the rotor core, and the magnetic ring is nested on the magnetic ring bracket.
  • Some rotor magnetic ring brackets are made of aluminum, and need to be fixedly assembled by using rivets. The relevant position is poor after assembly, the process is cumbersome, and the installation is troublesome.
  • the object of the present invention is to provide a rotor assembly which has a good single position, good relative position, no installation, reduced processes, reduced labor costs, and improved assembly efficiency.
  • a rotor assembly includes a permanent magnet, a rotor core and a magnetic ring.
  • the rotor core includes an annular cymbal provided with a central shaft hole and a plurality of magnetic conductive blocks protruding from the outer side of the annular cymbal, and a through hole is formed in the magnetic conductive block.
  • a radial groove is formed between two adjacent magnetic blocks, 7 magnets are embedded in the radial grooves, and end plates and bottom plates are respectively injection molded on the end faces and the bottom faces of the rotor core, and the end plates and the bottom plates pass through the through holes
  • the connecting posts are connected in one piece, and protrude upwardly on the end faces of the end plates to form a magnetic ring bracket, and the magnetic ring is mounted on the magnetic ring bracket.
  • the two sides of the opening portion of the radial groove have a hook formed on the inner side of the opening, and an outer plate is injection molded on the inner side and the opening of the hook, and the outer plate is integrally connected with the end plate and the bottom plate.
  • a boss is arranged in the middle of the bottom of the radial groove, and an inner side plate is injection molded on both sides of the boss, and the inner side plate is integrally connected with the end plate and the bottom plate.
  • the outer side surface of the above-mentioned magnetic conductive block is an exposed curved surface, and the outer side surface is centered on a point A which is offset from the center 0 of the central axis hole by a fixed distance H.
  • the magnetic ring bracket described above is annular, the end of the magnetic ring bracket is provided with a step, and the magnetic ring support 7 is on the step.
  • the outer side wall of the magnetic ring bracket is provided with a positioning groove, and the inner side wall of the magnetic ring protrudes from the positioning convex portion, and the positioning convex portion is engaged with the positioning groove, so that the magnetic ring bracket radially fixes the magnetic ring. .
  • the end face of the magnetic ring bracket described above is provided with an inverted buckle, and the inner side wall of the magnetic ring has a groove, and the reverse buckle and the groove are fastened together, so that the magnetic ring bracket axially fixes the magnetic ring.
  • the end plate and the bottom plate described above are respectively provided with glue tanks.
  • the outer side wall surface of the magnetic ring bracket described above is provided with a plurality of reinforcing ribs.
  • the end plate, the bottom plate, the connecting post, the outer side plate, the inner side plate and the magnetic ring bracket described above are integrally injection molded.
  • the utility model has the beneficial effects compared with the prior art: 1)
  • the end face and the bottom plate of the rotor core are respectively injection-molded with an end plate and a bottom plate, and the end plate and the bottom plate are connected by a connecting post passing through the through hole.
  • the magnetic ring bracket is protruded upward on the end surface of the end plate, the magnetic ring is mounted on the magnetic ring bracket, the structure is simple, the relevant position is good, no installation is required, the process is reduced, the labor cost is reduced, and the assembly efficiency is improved;
  • a blocking hook is protruded on the magnetic conductive blocks on both sides of the opening portion of the radial groove, and an outer side plate is injection molded on the inner side and the opening portion of the blocking hook, and the outer side plate is integrally connected with the end plate and the bottom plate, and is radially grooved
  • a boss is arranged in the middle of the bottom portion, and an inner side plate is injection molded on both sides of the boss, the inner side plate is integrally connected with the end plate and the bottom plate, and the end plate, the bottom plate, the outer side plate and the inner side plate are wrapped with the permanent magnet, and the connection is fastened;
  • 3) the magnetic ring bracket The end portion is provided with a step, the magnetic ring is supported on the step
  • the magnetic ring bracket is radially fixed to the magnetic ring, and the end of the magnetic ring bracket is provided with an inverted buckle, and the inner side wall of the magnetic ring has a groove, and the reverse buckle and the groove are fastened together, so that the magnetic ring bracket axially fixes the magnetic ring.
  • the structure design is reasonable and the installation is firm; 4)
  • the end plate and the bottom plate are respectively provided with glue tanks, and the glue tank is used for placing the glue for correcting the dynamic balance, which is convenient for the tube; 5) the end plate, the bottom plate, the connecting column, the outer plate and the inner plate It is injection-molded with the magnetic ring bracket, and the tube process is used to save labor costs.
  • Figure 1 is a perspective view of the utility model
  • Figure 2 is an exploded view of the utility model
  • Figure 3 is a front view of the utility model
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a side view of the utility model
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 5;
  • Figure 7 is a partial enlarged structural view of the rotor core of the present invention.
  • Embodiment 1 As shown in FIG. 1 and FIG. 7, the present invention is a rotor assembly including a permanent magnet 1, a rotor core 2 and a magnetic ring 4, and the rotor core 2 includes a ring-shaped turn provided with a central shaft hole 21. 22 and a plurality of magnetic conductive blocks 23 protruding from the outer side of the annular cymbal 22, a through hole 27 is formed in the magnetic conductive block 23, and a radial groove 24 is formed between the adjacent two magnetic conductive blocks 23, and the permanent magnet 1 is embedded in the radial direction.
  • an end plate 35 and a bottom plate 36 are respectively injection molded on the end surface and the bottom surface of the rotor core 2, and the end plate 35 and the bottom plate 36 are integrally connected by a connecting post 37 passing through the through hole 27, at the end plate 35.
  • the magnetic ring holder 3 is formed to protrude upward on the end surface, and the magnetic ring 4 is mounted on the magnetic ring holder 3.
  • Embodiment 2 On the basis of the first embodiment, the following technical feature is added: the two sides of the opening portion 25 of the radial groove 24 protrude from the magnetic conductive block 23, and the inside of the blocking hook 26 is at the opening portion 25.
  • the outer side plate 38 is injection molded, and the outer side plate 38 is integrally connected to the end plate 35 and the bottom plate 36.
  • Embodiment 3 On the basis of the second embodiment, the following technical features are added: a boss 28 is disposed in the middle of the bottom of the radial groove 24, and an inner plate 39, an inner plate 39 and an end plate 35 are injection molded on both sides of the boss 28.
  • the bottom plate 36 is integrally connected.
  • Embodiment 4 On the basis of the first embodiment or the second embodiment or the third embodiment, the following technical features are added: the outer side surface 231 of the magnetic conductive block 23 is an exposed curved surface, and the outer side surface 231 is an offset central shaft hole 21 Center 0—The point A of the fixed distance H is the center of the circle.
  • Embodiment 5 Adding the following technical features on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3
  • the magnetic ring bracket 3 is annular, and the end of the magnetic ring bracket 3 is provided with a step 31, and the magnetic ring 4 is supported on the step 31.
  • Embodiment 6 On the basis of the fifth embodiment, the following technical features are added: on the outer side of the step 31, the outer side wall of the magnetic ring bracket 3 is provided with a positioning groove 32, and the inner side wall of the magnetic ring 4 protrudes from the positioning convex portion 41, and the positioning convex portion 41 is engaged with the positioning groove 32, so that the magnetic ring bracket 3 radially fixes the magnetic ring 4.
  • Embodiment 7 On the basis of the sixth embodiment, the following technical features are added: the end surface of the magnetic ring bracket 3 is provided with an undercut 33, and the inner side wall of the magnetic ring 4 has a groove 42, and the undercut 33 and the groove 42 are fastened together.
  • the magnetic ring holder 3 is axially fixed to the magnetic ring 4.
  • Embodiment 8 The following technical features are added on the basis of Embodiment 1: The end plates 35 and the bottom plate 36 are respectively provided with glue tanks 5a, 5b.
  • Embodiment 9 On the basis of the first embodiment, the following technical features are added:
  • the outer wall surface of the magnetic ring bracket 3 is provided with a plurality of reinforcing ribs 34.
  • Embodiment 10 On the basis of the third embodiment, the following technical features are added: the end plate 35, the bottom plate 36, the connecting post 37, the outer side plate 38, the inner side plate 39 and the magnetic ring bracket are integrally injection molded.
  • Embodiment 2 Embodiment 3
  • Embodiment 4 Embodiment 5
  • Embodiment 6 Example 7, Embodiment 8, Example 9
  • Embodiment 10 The added technical features mentioned are freely combined and combined with the technical solution of the first embodiment into a new technical solution.
  • the end face and the bottom plate 36 of the rotor core 2 are respectively injection-molded with an end plate 35 and a bottom plate 36.
  • the end plate 35 and the bottom plate 36 are integrally connected by a connecting post 37 passing through the through hole 27, on the end surface of the end plate 35.
  • the magnetic ring bracket 3 is formed upwardly, and the magnetic ring 4 is mounted on the magnetic ring bracket 3.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种转子组件，包括永磁体（1）、转子铁芯（2）和磁环（4），转子铁芯（2）包括设置有中心轴孔（21）的环形圈（22）和从环形圈（22）外侧凸出的若干块导磁块（23），导磁块（23）上开设通孔（27），在相邻两导磁块（23）之间形成径向凹槽（24），永磁体（1）嵌入径向凹槽（24）里，在转子铁芯（2）的端面和底面上分别注塑有端板（35）和底板（36），端板（35）和底板（36）通过穿过通孔（27）的连接柱（37）连接成一整体，在端板（35）的端面上向上凸出形成磁环支架（3），磁环（4）安装在磁环支架（3）上。

Description

一种转子组件
技术领域： 本实用新型涉及一种转子组件， 属于直流无刷电机领域。
背景技术：
传统的直流无刷电机（BLDC MOTOR)的转子组件， 一般包括转子铁芯、 永 磁体、磁环支架和磁环， 永磁体安装在转子铁芯上， 磁环嵌套在磁环支架上， 现有的转子磁环支架为铝件，且需要利用铆釘进行固定装配，装配后相关位置 度较差， 工序繁瑣， 安装麻烦。
发明内容：
本实用新型的目的是提供一种转子组件，该结构筒单，相关位置度较好， 无需安装， 减少工序， 降低人工成本， 提高装配效率。
本实用新型的目的是通过以下的技术方案予以实现的。
一种转子组件， 包括永磁体、 转子铁芯和磁环， 转子铁芯包括设置有中 心轴孔的环形圏和从环形圏外侧凸出的若干块导磁块，导磁块上开设通孔，在 相邻两导磁块之间形成径向凹槽， 7 磁体嵌入径向凹槽里， 在转子铁芯的端 面和底面上分别注塑有端板和底板， 端板和底板通过穿过通孔的连接柱连接 成一整体，在端板的端面上向上凸出形成磁环支架，磁环安装在磁环支架上。
上述所述的径向凹槽的开口部的两侧导磁块上凸出挡钩，在挡钩的内侧、 开口部处注塑有外侧板， 外侧板与端板和底板连接一体。
上述所述的在径向凹槽的底部中间设置凸台，在凸台两侧注塑有内侧板， 内侧板与端板和底板连接一体。
上述所述的导磁块的外侧面是外露的弧形面， 外侧面是以偏移中心轴孔 的中心 0—定距离 H的点 A为圓心。
上述所述的磁环支架是环形的， 磁环支架的端部设有台阶， 磁环支 7 在 台阶上。 上述所述的在台阶外侧、 磁环支架外侧壁上设有定位槽， 磁环内侧壁上 凸出定位凸部， 定位凸部与定位槽相嵌配合， 使磁环支架径向固定住磁环。
上述所述的磁环支架端面上设有倒扣， 磁环内侧壁上凹槽， 倒扣与凹槽 扣合在一起， 使磁环支架轴向固定住磁环。
上述所述的端板和底板上分别设有胶泥槽。
上述所述的磁环支架的外侧壁面设有若干加强筋。
上述所述的端板、 底板、 连接柱、 外侧板、 内侧板和磁环支架一体注塑 成型的。
本实用新型与现有技术相比的有益效果是： 1 )本实用新型在转子铁芯的 端面和底面上分别注塑有端板和底板， 端板和底板通过穿过通孔的连接柱连 接成一整体， 在端板的端面上向上凸出形成磁环支架， 磁环安装在磁环支架 上， 结构筒单， 相关位置度较好， 无需安装， 减少工序， 降低人工成本， 提 高装配效率； 2 )径向凹槽的开口部的两侧导磁块上凸出挡钩，在挡钩的内侧、 开口部处注塑有外侧板， 外侧板与端板和底板连接一体， 在径向凹槽的底部 中间设置凸台， 在凸台两侧注塑有内侧板， 内侧板与端板和底板连接一体， 端板、 底板、 外侧板和内侧板包裹住永磁体， 连接紧固； 3 )磁环支架的端部 设有台阶， 磁环支承在台阶上， 在台阶外侧、磁环支架外侧壁上设有定位槽， 磁环内侧壁上凸出定位凸部， 定位凸部与定位槽相嵌配合， 使磁环支架径向 固定住磁环， 磁环支架端面上设有倒扣， 磁环内侧壁上凹槽， 倒扣与凹槽扣 合在一起， 使磁环支架轴向固定住磁环， 结构设计合理， 安装牢固； 4 )端板 和底板上分别设有胶泥槽，胶泥槽用于放置校正动平衡的胶泥，方便筒易； 5 ) 端板、 底板、 连接柱、 外侧板、 内侧板和磁环支架一体注塑成型的， 筒化工 序， 节约人工成本。
附图说明：
图 1 是实用新型的立体图； 图 2是本实用新型的分解图；
图 3是本实用新型正视图；
图 4是图 3的 A-A部分剖视图；
图 5是本实用新型侧视图；
图 6 是图 5的 B-B部分剖视图；
图 7 是本实用新型转子铁芯局部放大结构示意图。
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和图 7所示， 本实用新型是一种转子组件， 包括永磁 体 1、 转子铁芯 2和磁环 4 , 转子铁芯 2包括设置有中心轴孔 21的环形圏 22 和从环形圏 22外侧凸出的若干块导磁块 23，导磁块 23上开设通孔 27 , 在相 邻两导磁块 23之间形成径向凹槽 24 , 永磁体 1嵌入径向凹槽 24里， 在转子 铁芯 2的端面和底面上分别注塑有端板 35和底板 36 , 端板 35和底板 36通 过穿过通孔 27的连接柱 37连接成一整体，在端板 35的端面上向上凸出形成 磁环支架 3 , 磁环 4安装在磁环支架 3上。
实施例二：在实施例一的基础上增加如下技术特征：径向凹槽 24的开口 部 25的两侧导磁块 23上凸出挡钩 26 , 在挡钩 26的内侧、 开口部 25处注塑 有外侧板 38 , 外侧板 38与端板 35和底板 36连接一体。
实施例三：在实施例二的基础上增加如下技术特征：在径向凹槽 24的底 部中间设置凸台 28 , 在凸台 28两侧注塑有内侧板 39 , 内侧板 39与端板 35 和底板 36连接一体。
实施例四： 在实施例一或实施例二或实施例三的基础上增加如下技术特 征：导磁块 23的外侧面 231是外露的弧形面，外侧面 231是以偏移中心轴孔 21的中心 0—定距离 H的点 A为圓心。
实施例五： 在实施例一或实施例二或实施例三的基础上增加如下技术特 征： 磁环支架 3是环形的， 磁环支架 3的端部设有台阶 31 , 磁环 4支承在台 阶 31上。
实施例六： 在实施例五的基础上增加如下技术特征： 在台阶 31外侧、磁 环支架 3外侧壁上设有定位槽 32 ,磁环 4内侧壁上凸出定位凸部 41 ,定位凸 部 41与定位槽 32相嵌配合， 使磁环支架 3径向固定住磁环 4。
实施例七： 在实施例六的基础上增加如下技术特征： 磁环支架 3端面上 设有倒扣 33 , 磁环 4内侧壁上凹槽 42 ,倒扣 33与凹槽 42扣合在一起， 使磁 环支架 3轴向固定住磁环 4。
实施例八： 在实施例一的基础上增加如下技术特征： 端板 35和底板 36 上分别设有胶泥槽 5a , 5b。
实施例九： 在实施例一的基础上增加如下技术特征： 磁环支架 3的外侧 壁面设有若干加强筋 34。
实施例十： 在实施例三的基础上增加如下技术特征： 端板 35、 底板 36、 连接柱 37、 外侧板 38、 内侧板 39和磁环支架 3—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、 实施例五、 实施例六、 实施例七、 实施例八、 实 施例九和实施例十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。
本实用新型在转子铁芯 2的端面和底面上分别注塑有端板 35和底板 36 , 端板 35和底板 36通过穿过通孔 27的连接柱 37连接成一整体， 在端板 35 的端面上向上凸出形成磁环支架 3 , 磁环 4安装在磁环支架 3上， 结构筒单， 相关位置度较好， 无需安装， 减少工序， 降低人工成本， 提高装配效率。

Claims

权利要求
1. 一种转子组件， 包括永磁体（1)、 转子铁芯 （2)和磁环（4), 转子铁芯 (2)包括设置有中心轴孔（ 21 ) 的环形圏 （ 22 )和从环形圏 （ 22 )外侧凸 出的若干块导磁块（23) ，导磁块 3)上开设通孔（27), 在相邻两导 磁块（23)之间形成径向凹槽（24), 永磁体（1 )嵌入径向凹槽（24) 里， 其特征在于： 在转子铁芯（ 2 )的端面和底面上分别注塑有端板（ 35 ) 和底板（ 36 ), 端板（ 35 )和底板（ 36 )通过穿过通孔（ 27 )的连接柱 ( 37 ) 连接成一整体， 在端板（35 ) 的端面上向上凸出形成磁环支架 （3), 磁 环（ 4 )安装在磁环支架（ 3 )上。
2. 根据权利要求 1 所述的一种转子组件， 其特征在于： 径向凹槽（24) 的 开口部 5) 的两侧导磁块 3)上凸出挡钩（26), 在挡钩 6)的内 侧、 开口部 （ 25 )处注塑有外侧板（ 38 ), 外侧板（ 38 )与端板（ 35 )和 底板（ 36 )连接一体。
3. 根据权利要求 2 所述的一种转子组件， 其特征在于： 在径向凹槽（24) 的底部中间设置凸台 （28 ), 在凸台 （28 ) 两侧注塑有内侧板（39), 内 侧板（ 39 )与端板（ 35 )和底板（ 36 )连接一体。
4. 根据权利要求 1或 2或 3所述的一种转子组件，其特征在于：导磁块（ 23 ) 的外侧面（ 2 )是外露的弧形面， 外侧面（ 2 )是以偏移中心轴孔（ 21 ) 的中心 0—定距离 H的点（A)为圓心。
5. 根据权利要求 1或 2或 3所述的一种转子组件， 其特征在于： 磁环支架
( 3 )是环形的， 磁环支架（ 3 ) 的端部设有台阶（ 31 ), 磁环 （ 4 ) 支承 在台阶（31 )上。
6. 根据权利要求 5所述的一种转子组件， 其特征在于： 在台阶（31 )外侧、 磁环支架（3)外侧壁上设有定位槽（32), 磁环（4) 内侧壁上凸出定位 凸部 （ 41 ), 定位凸部 （ 41 )与定位槽（ 32 )相嵌配合， 使磁环支架（ 3 ) 径向固定住磁环（4)。
7. 根据权利要求 6所述的一种转子组件， 其特征在于： 磁环支架（3)端面 上设有倒扣（ 33 ),磁环（ 4 )内侧壁上凹槽（ 42 ),倒扣（ 33 )与凹槽（ 42 ) 扣合在一起， 使磁环支架（ 3 )轴向固定住磁环（ 4 )0
8. 根据权利要求 1 所述的一种转子组件， 其特征在于： 端板（35 )和底板
( 36 )上分别设有胶泥槽（¼, 5b ) 。
9. 根据权利要求 1所述的一种转子组件， 其特征在于： 磁环支架（3 ) 的外 侧壁面设有若干加强筋 （34 )。
10. 根据权利要求 3所述的一种转子组件， 其特征在于： 端板（ 35 )、 底板 ( 36 )、 连接柱（ 37 ), 外侧板（ 38 )、 内侧板（ 39 )和磁环支架（ 3 ) — 体注塑成型的。
PCT/CN2012/082648 2012-05-30 2012-10-09 一种转子组件 WO2014000348A1 (zh)

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