WO2021093261A1 - 一种防火塑封电机 - Google Patents

一种防火塑封电机 Download PDF

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Publication number
WO2021093261A1
WO2021093261A1 PCT/CN2020/084036 CN2020084036W WO2021093261A1 WO 2021093261 A1 WO2021093261 A1 WO 2021093261A1 CN 2020084036 W CN2020084036 W CN 2020084036W WO 2021093261 A1 WO2021093261 A1 WO 2021093261A1
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WIPO (PCT)
Prior art keywords
plastic
end cover
encapsulated
plastic package
cavity
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PCT/CN2020/084036
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English (en)
French (fr)
Inventor
林海奇
邓双朝
张成阳
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中山大洋电机股份有限公司
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Publication of WO2021093261A1 publication Critical patent/WO2021093261A1/zh

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    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • 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

Definitions

  • the utility model relates to a fireproof plastic-sealed motor.
  • the existing injection motor with fireproof structure includes a plastic-encapsulated stator assembly, a rotor assembly and a rotating shaft.
  • the plastic-encapsulated stator assembly includes a stator core, end insulation, coil windings and a plastic enclosure. The end surface of the stator core is wound after the end insulation is installed. Coil winding, the plastic shell is wrapped around the stator core, end insulation and coil winding, the rotating shaft is installed on the rotor assembly, the first cavity is arranged in the middle of the plastic stator assembly, the rotor assembly is installed in the first cavity, and the plastic stator assembly The two ends of the motor are covered with metal fire-proof covers.
  • This kind of plastic-sealed motor uses a lot of BMC plastic packaging material, has a large size, and takes up a large volume.
  • the BMC plastic packaging material is not fireproof. If the internal fire occurs, it will quickly spread to the outside of the motor, and the fire protection effect is poor. .
  • the purpose of the utility model is to provide a fire-proof plastic-sealed motor, which can solve the problems of large volume and poor fire-proof effect of the existing fire-proof plastic-sealed motor.
  • the purpose of the utility model is to provide a fireproof plastic-sealed motor, which includes a plastic-sealed stator assembly, a rotor assembly and a rotating shaft.
  • the plastic-sealed stator assembly includes a stator iron core, end insulation, coil windings and a plastic sealing body. The end surface of the stator iron core is installed with an end. The coil winding is wound after insulation.
  • the plastic package is wrapped around the stator core, end insulation and coil winding.
  • the rotating shaft is installed on the rotor assembly.
  • the plastic-encapsulated stator assembly is provided with a first cavity in the middle, and the rotor assembly is installed in the first cavity.
  • It is characterized in that it also includes an upper end cover and a lower end cover, the upper end cover and the lower end cover are installed together to form a second cavity, the plastic-encapsulated stator assembly and the rotor assembly are installed in the second cavity, part of the stator core
  • the side surface protrudes outside the outer surface of the plastic package body to form a connecting part, and the inner surface of the upper end cover or/and the lower end cover is in close contact with the connecting part so that the plastic package stator assembly is fixed in the second cavity.
  • the above-mentioned coil windings have exposed coil portions protruding on both ends of the stator core.
  • the stator core includes a ring-shaped yoke and a number of teeth extending from the yoke to the center of the circle, two adjacent to each other.
  • a wire-insertion groove is formed between the teeth, and the outer edge of the yoke is provided with several cutting edges in the circumferential direction.
  • the plastic package includes a first plastic package, a second plastic package, and two third plastic packages.
  • Two third plastic packages Wrap the exposed parts of the coils at both ends of the stator core respectively, the first plastic sealing part fills each wire embedding groove, the second plastic sealing part wraps the trimming on the outer peripheral surface of the yoke part, and the first plastic sealing part and the third plastic sealing part are between the two third plastic sealing parts.
  • the second plastic sealing parts are connected together.
  • a part of the outer surface of the yoke part protrudes outside the second plastic sealing part to form the connecting part.
  • the above-mentioned upper end cover and lower end cover are made of metal materials.
  • the above-mentioned upper end cover and lower end cover are composed of an end plate and a sleeve part stretched out from the edge of the end plate.
  • a bearing seat for mounting the bearing is arranged in the middle of the end plate.
  • the rotating shaft is supported and installed on the bearing, and the sleeve part is One end is provided with a flanging.
  • a plurality of buckles are arranged on the flange of the lower end cover, and the buckles are buckled on the flange of the upper end cover and connect the upper end cover and the lower end cover together.
  • the fireproof plastic-encapsulated motor includes a plastic-encapsulated stator assembly, a rotor assembly and a rotating shaft.
  • the plastic-encapsulated stator assembly includes a stator core, end insulation, coil windings and a plastic enclosure. The end surface of the stator core is installed with end insulation and then the coil winding is wound.
  • the plastic package is wrapped around the stator core, end insulation and coil windings, the rotating shaft is installed on the rotor assembly, the plastic package stator assembly is provided with a first cavity in the middle, and the rotor assembly is installed in the first cavity.
  • It includes an upper end cover and a lower end cover, the upper end cover and the lower end cover are installed together to form a second cavity, the plastic-encapsulated stator assembly and the rotor assembly are installed in the second cavity, and part of the outer surface of the stator core protrudes from the plastic-encapsulated body
  • the outer surface of the stator core forms a connecting part, and the inner surface of the upper end cover or/and the lower end cover is in close contact with the connecting part so that the plastic-encapsulated stator assembly is fixed in the second cavity; part of the outer surface of the stator core protrudes from the outer surface of the plastic-encapsulated body
  • the outer cover is directly connected with the upper end cover or/and the lower end cover, which reduces the volume of the plastic package.
  • the BMC plastic packaging material uses less material and the overall volume of the motor is reduced; the upper end cover and the lower end cover completely seal the plastic stator assembly in the second cavity , Good fire prevention effect;
  • Figure 1 is a schematic structural diagram of a fireproof plastic-encapsulated motor provided by an embodiment of the present utility model
  • Figure 2 is an exploded view of a fireproof plastic-encapsulated motor
  • Figure 3 is a top view of the fireproof plastic-encapsulated motor
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a B-B sectional view of Figure 3;
  • Figure 6 is a schematic view of the structure of a plastic-encapsulated stator assembly in a fire-resistant plastic-encapsulated motor
  • Figure 7 is a side view of a plastic-encapsulated stator assembly
  • Fig. 8 is a cross-sectional view taken along the line C-C in Fig. 7.
  • the fire-resistant plastic-encapsulated motor includes a plastic-encapsulated stator assembly 1, a rotor assembly 2 and a shaft 3.
  • the plastic-encapsulated stator assembly 1 includes a stator core 11 and an end
  • the insulation 12, the coil winding 13 and the plastic encapsulation body 14, the end insulation 12 is installed on the end surface of the stator core 11, and then the coil winding 13 is wound.
  • the plastic encapsulation body 14 is wrapped around the stator core 11, the end insulation 12 and the coil winding 13.
  • the rotating shaft 3 is installed on the rotor assembly 2.
  • the plastic-encapsulated stator assembly 1 is provided with a first cavity 10 in the middle, and the rotor assembly 2 is installed in the first cavity 10.
  • the rotor assembly 2 is characterized in that it also includes an upper end cover 41 and a lower end cover 42.
  • the upper end cover 41 and the lower end cover 42 are installed together to form a second cavity 40.
  • the plastic-encapsulated stator assembly 1 and the rotor assembly 2 are installed in the second cavity 40. Part of the outer side of the stator core 11 protrudes from the plastic-encapsulated body 14.
  • a connecting portion 115 is formed on the outer side surface, and the inner side surface 43 of the upper end cover 41 or/and the lower end cover 42 is in close contact with the connecting portion 115 so that the plastic-encapsulated stator assembly 1 is fixed in the second cavity 40.
  • Part of the outer surface of the stator core 11 protrudes from the outer surface of the plastic package body 14 and is directly connected to the upper end cover 41 or/and the lower end cover 42, which reduces the volume of the plastic package body 14.
  • the BMC plastic package material uses less material and the overall volume of the motor It becomes smaller; the upper end cover 41 and the lower end cover 42 completely seal the plastic-encapsulated stator assembly 1 in the second cavity 40, and the fireproof effect is good.
  • the above-mentioned coil winding 13 has coil exposed portions 131 protruding from both ends of the stator core 11.
  • the stator core 11 includes an annular yoke 111 and a number of teeth extending from the yoke 111 in the direction of the center of the circle.
  • a wire-insertion groove 113 is formed between two adjacent tooth parts 112, a number of cut edges 114 are provided on the outer edge of the yoke part 111, and the plastic package body 14 includes a first plastic package portion 141 and a second plastic package portion 142 And two third plastic sealing parts 143, the two third plastic sealing parts 143 respectively wrap the coil exposed parts 131 at both ends of the stator core 11, the first plastic sealing part 141 fills each wire-inserting groove 113, and the second plastic sealing part 142 is in the yoke part
  • the outer peripheral surface of 111 wraps the trim 114, and the two third plastic-sealed parts 143 are connected by a first plastic-sealed part 141 and a second plastic-sealed part 142.
  • the first plastic sealing part 141 and the second plastic sealing part 142 ensure the structural strength of the plastic packaging body 14.
  • the structure is simple, and the outer circle of the stator iron core 11 where the upper end cover 41 or/and the lower end cover 42 is matched protrudes out of the plastic package body 14 to ensure the concentricity of the plastic package stator assembly with the upper end cover 41 and the lower end cover 42.
  • the upper end cover 41 and the lower end cover 42 described above are buckled together.
  • the upper end cover 41 and the lower end cover 42 are easily connected.
  • the above-mentioned upper end cover 41 and lower end cover 42 are made of metal materials.
  • the metal material has good fire resistance, convenient production and small size.
  • the above-mentioned upper end cover 41 and lower end cover 42 are composed of an end plate 44 and a sleeve part 43 stretched from the edge of the end plate 44.
  • a bearing seat 45 on which the bearing 31 is installed is arranged in the middle of the end plate 44, and the rotating shaft 3 supports Mounted on the bearing 31, a flange 46 is provided at one end of the sleeve portion 43.
  • the upper end cover 41 and the lower end cover 42 have a simple structure.
  • a plurality of buckles 421 are provided on the flange 46 of the lower end cover 42 described above.
  • the buckles 421 are buckled on the flange 46 of the upper end cover 41 and connect the upper end cover 41 and the lower end cover 42 together.
  • the flanges 46 of the upper end cover 41 and the lower end cover 42 both have a plurality of lugs 461 protruding circumferentially, and the lugs 461 are provided with mounting holes 462.
  • the mounting hole 462 can facilitate the installation of the motor, and there is no need to inject a mounting bracket on the plastic package body 14, thereby further reducing plastic packaging materials, further reducing the size of the plastic packaging motor, and reducing the weight of the plastic packaging motor.

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

Abstract

一种防火塑封电机，包括塑封定子组件（1）、转子组件（2）和转轴（3），塑封定子组件（1）包括定子铁芯（11）、端部绝缘（12）、线圈绕组（13）和塑封体（14），塑封体（14）包裹在定子铁芯（11）、端部绝缘（12）和线圈绕组（13）外，转轴（3）安装在转子组件（2）上，塑封定子组件（1）中间设有第一空腔（10），转子组件（2）安装在第一空腔（10）里，其还包括上端盖（41）和下端盖（42），上端盖（41）与下端盖（42）安装在一起并形成第二空腔（40），所述塑封定子组件（1）和转子组件（2）安装在第二空腔（40）内，定子铁芯（11）的部分外侧面凸出在塑封体（14）的外侧面外形成连接部（115），上端盖（41）或/和下端盖（42）的内侧面与连接部（115）紧密接触使塑封定子组件（1）固定在第二空腔（40）内；塑封体（14）的体积小，BMC塑封料用料少，电机的整体体积小；上端盖（41）与下端盖（42）将塑封定子组件（1）完全密封在第二空腔（40）内，防火效果好。

Description

一种防火塑封电机 技术领域：
本实用新型涉及一种防火塑封电机。
背景技术：
现有的具有防火结构的注塑电机包括塑封定子组件、转子组件和转轴，塑封定子组件包括定子铁芯、端部绝缘、线圈绕组和塑封外壳，定子铁芯的端面上安装端部绝缘后卷绕线圈绕组，塑封外壳包裹在定子铁芯、端部绝缘和线圈绕组外，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，转子组件安装在第一空腔里，塑封定子组件的两端罩有金属防火罩，这种塑封电机，BMC塑封料用料多，外形尺寸大，占用体积大，且BMC塑封料不防火，若内部起火后会迅速蔓延至电机外侧，防火效果差。
发明内容：
本实用新型的目的是提供一种防火塑封电机，能解决现有防火塑封电机体积大、防火效果差的问题。
本实用新型的目的是通过下述技术方案予以实现的。
本实用新型的目的是提供一种防火塑封电机，包括塑封定子组件、转子组件和转轴，塑封定子组件包括定子铁芯、端部绝缘、线圈绕组和塑封体，定子铁芯的端面上安装端部绝缘后卷绕线圈绕组，塑封体包裹在定子铁芯、端部绝缘和线圈绕组外，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，转子组件安装在第一空腔里，其特征在于：还包括上端盖和下端盖，上端盖与下端盖安装在一起并形成第二空腔，所述塑封定子组件和转子组件安装在第二空腔内，定子铁芯的部分外侧面凸出在塑封体的外侧面外形成连接部，上端盖或/和下端盖的内侧面与连接部紧密接触使得塑封定子组件固定在第二空腔内。
上述所述线圈绕组在定子铁芯的两端面上凸出有线圈外露部，定子铁芯包括圆环状的轭部及自所述轭部向圆心方向延伸的若干个齿部，相邻两个齿部之间形成嵌线槽，轭部的外边缘上周向设置有若干个切边，塑封体包括第一塑封 部、第二塑封部和两个第三塑封部，两个第三塑封部分别包裹线定子铁芯两端的线圈外露部，第一塑封部填充各个嵌线槽，第二塑封部在轭部外周面外包裹切边，两个第三塑封部之间由第一塑封部和第二塑封部连接在一起。
上述所述轭部的部分外侧面凸出在第二塑封部外形成所述连接部。
上述所述上端盖和下端盖扣接着一起。
上述所述上端盖与下端盖是金属材料制造。
上述所述上端盖和下端盖，都是由端板、从端板边缘拉伸出的套筒部组成，端板中间设置有安装轴承的轴承座，转轴支承安装在轴承上，在套筒部的一端设置有翻边。
上述所述下端盖的翻边上设有若干卡扣，卡扣扣在上端盖的翻边上并使上端盖与下端盖连接在一起。
上述所述上端盖和下端盖的翻边上均周向凸出有若干凸耳，凸耳上设有安装孔。
本实用新型与现有技术相比，具有如下效果：
1)所述防火塑封电机包括塑封定子组件、转子组件和转轴，塑封定子组件包括定子铁芯、端部绝缘、线圈绕组和塑封体，定子铁芯的端面上安装端部绝缘后卷绕线圈绕组，塑封体包裹在定子铁芯、端部绝缘和线圈绕组外，转轴安装在转子组件上，塑封定子组件中间设有第一空腔，转子组件安装在第一空腔里，其特征在于：还包括上端盖和下端盖，上端盖与下端盖安装在一起并形成第二空腔，所述塑封定子组件和转子组件安装在第二空腔内，定子铁芯的部分外侧面凸出在塑封体的外侧面外形成连接部，上端盖或/和下端盖的内侧面与连接部紧密接触使得塑封定子组件固定在第二空腔内；定子铁芯的部分外侧面凸出在塑封体的外侧面外直接与上端盖或/和下端盖连接，缩小了塑封体的体积，BMC塑封料用料少，电机的整体体积变小；上端盖与下端盖将塑封定子组件完全密封在第二空腔内，防火效果好；
2)本实用新型的其它优点在实施例部分展开详细描述。
附图说明：
图1是本实用新型实施例提供的防火塑封电机的结构示意图；
图2是防火塑封电机的爆炸图；
图3是防火塑封电机的俯视图；
图4是图3的A-A剖视图；
图5是图3的B-B剖视图；
图6是防火塑封电机中塑封定子组件的结构示意图；
图7是塑封定子组件的侧视图；
图8是图7的C-C剖视图。
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8所示，本实施例提供的是一种防火塑封电机，防火塑封电机，包括塑封定子组件1、转子组件2和转轴3，塑封定子组件1包括定子铁芯11、端部绝缘12、线圈绕组13和塑封体14，定子铁芯11的端面上安装端部绝缘12后卷绕线圈绕组13，塑封体14包裹在定子铁芯11、端部绝缘12和线圈绕组13外，转轴3安装在转子组件2上，塑封定子组件1中间设有第一空腔10，转子组件2安装在第一空腔10里，其特征在于：还包括上端盖41和下端盖42，上端盖41与下端盖42安装在一起并形成第二空腔40，所述塑封定子组件1和转子组件2安装在第二空腔40内，定子铁芯11的部分外侧面凸出在塑封体14的外侧面外形成连接部115，上端盖41或/和下端盖42的内侧面43与连接部115紧密接触使得塑封定子组件1固定在第二空腔40内。定子铁芯11的部分外侧面凸出在塑封体14的外侧面外直接与上端盖41或/和下端盖42连接，缩小了塑封体14的体积，BMC塑封料用料少，电机的整体体积变小；上端盖41与下端盖42将塑封定子组件1完全密封在第二空腔40内，防火效果好。
上述所述线圈绕组13在定子铁芯11的两端面上凸出有线圈外露部131，定子铁芯11包括圆环状的轭部111及自所述轭部111向圆心方向延伸的若干个齿部112，相邻两个齿部112之间形成嵌线槽113，轭部111的外边缘上周向设置有若干个切边114，塑封体14包括第一塑封部141、第二塑封部142和两个第三塑封部143，两个第三塑封部143分别包裹线定子铁芯11两端的线圈外露部131，第一塑封部141填充各个嵌线槽113，第二塑封部142在轭部111外周面外包裹切边114，两个第三塑封部143之间由第一塑封部141和第二塑封部142连接在一起。第一塑封部141和第二塑封部142保证了塑封体14的结构强度。
上述所述轭部111的部分外侧面凸出在第二塑封部142外形成所述连接部115。结构简单，与上端盖41或/和下端盖42配合处的定子铁芯11外圆凸出在塑封体14外，保证了塑封定子组件与上端盖41、下端盖42的同心度。
上述所述上端盖41和下端盖42扣接着一起。上端盖41与下端盖42连接方便。
上述所述上端盖41与下端盖42是金属材料制造。金属材料防火性能好，生产方便，体积小。
上述所述上端盖41和下端盖42，都是由端板44、从端板44边缘拉伸出的套筒部43组成，端板44中间设置有安装轴承31的轴承座45，转轴3支承安装在轴承31上，在套筒部43的一端设置有翻边46。上端盖41和下端盖42结构简单。
上述所述下端盖42的翻边46上设有若干卡扣421，卡扣421扣在上端盖41的翻边46上并使上端盖41与下端盖42连接在一起。
上述所述上端盖41和下端盖42的翻边46上均周向凸出有若干凸耳461，凸耳461上设有安装孔462。安装孔462可方便电机的安装，无需在塑封体14上注塑安装支架，进一步减少塑封用料，进一步缩小塑封电机体积，减轻塑封电机重量。
以上实施例为本实用新型的较佳实施方式，但本实用新型的实施方式不限于此，其他任何未背离本实用新型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，都包含在本实用新型的保护范围之内。

Claims (8)

  1. 一种防火塑封电机，包括塑封定子组件(1)、转子组件(2)和转轴(3)，塑封定子组件(1)包括定子铁芯(11)、端部绝缘(12)、线圈绕组(13)和塑封体(14)，定子铁芯(11)的端面上安装端部绝缘(12)后卷绕线圈绕组(13)，塑封体(14)包裹在定子铁芯(11)、端部绝缘(12)和线圈绕组(13)外，转轴(3)安装在转子组件(2)上，塑封定子组件(1)中间设有第一空腔(10)，转子组件(2)安装在第一空腔(10)里，其特征在于：还包括上端盖(41)和下端盖(42)，上端盖(41)与下端盖(42)安装在一起并形成第二空腔(40)，所述塑封定子组件(1)和转子组件(2)安装在第二空腔(40)内，定子铁芯(11)的部分外侧面凸出在塑封体(14)的外侧面外形成连接部(115)，上端盖(41)或/和下端盖(42)的内侧面(43)与连接部(115)紧密接触使得塑封定子组件(1)固定在第二空腔(40)内。
  2. 根据权利要求1所述的一种防火塑封电机，其特征在于：所述线圈绕组(13)在定子铁芯(11)的两端面上凸出有线圈外露部(131)，定子铁芯(11)包括圆环状的轭部(111)及自所述轭部(111)向圆心方向延伸的若干个齿部(112)，相邻两个齿部(112)之间形成嵌线槽(113)，轭部(111)的外边缘上周向设置有若干个切边(114)，塑封体(14)包括第一塑封部(141)、第二塑封部(142)和两个第三塑封部(143)，两个第三塑封部(143)分别包裹线定子铁芯(11)两端的线圈外露部(131)，第一塑封部(141)填充各个嵌线槽(113)，第二塑封部(142)在轭部(111)外周面外包裹切边(114)，两个第三塑封部(143)之间由第一塑封部(141)和第二塑封部(142)连接在一起。
  3. 根据权利要求2所述的一种防火塑封电机，其特征在于：所述轭部(111)的部分外侧面凸出在第二塑封部(142)外形成所述连接部(115)。
  4. 根据权利要求1或2或3所述的一种防火塑封电机，其特征在于：所述上端盖(41)和下端盖(42)扣接着一起。
  5. 根据权利要求4所述的一种防火塑封电机，其特征在于：所述上端盖(41) 与下端盖(42)是金属材料制造。
  6. 根据权利要求5所述的一种防火塑封电机，其特征在于：所述上端盖(41)和下端盖(42)，都是由端板(44)、从端板(44)边缘拉伸出的套筒部(43)组成，端板(44)中间设置有安装轴承(31)的轴承座(45)，转轴(3)支承安装在轴承(31)上，在套筒部(43)的一端设置有翻边(46)。
  7. 根据权利要求6所述的一种防火塑封电机，其特征在于：所述下端盖(42)的翻边(46)上设有若干卡扣(421)，卡扣(421)扣在上端盖(41)的翻边(46)上并使上端盖(41)与下端盖(42)连接在一起。
  8. 根据权利要求7所述的一种防火塑封电机，其特征在于：所述上端盖(41)和下端盖(42)的翻边(46)上均周向凸出有若干凸耳(461)，凸耳(461)上设有安装孔(462)。
PCT/CN2020/084036 2019-11-15 2020-04-09 一种防火塑封电机 WO2021093261A1 (zh)

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EP0001222A1 (de) * 1977-08-31 1979-04-04 Hanning Elektro-Werke Gmbh & Co. Elektrisch betriebener Ölbrennermotor
CN203554139U (zh) * 2013-11-14 2014-04-16 中山大洋电机股份有限公司 一种塑封电机
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