WO2020232803A1 - 一种无刷马达 - Google Patents

一种无刷马达 Download PDF

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Publication number
WO2020232803A1
WO2020232803A1 PCT/CN2019/094890 CN2019094890W WO2020232803A1 WO 2020232803 A1 WO2020232803 A1 WO 2020232803A1 CN 2019094890 W CN2019094890 W CN 2019094890W WO 2020232803 A1 WO2020232803 A1 WO 2020232803A1
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WO
WIPO (PCT)
Prior art keywords
hole
rotor
brushless motor
shaft
tuyere
Prior art date
Application number
PCT/CN2019/094890
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English (en)
French (fr)
Inventor
周海春
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江苏铁锚工具有限公司
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Filing date
Publication date
Application filed by 江苏铁锚工具有限公司 filed Critical 江苏铁锚工具有限公司
Publication of WO2020232803A1 publication Critical patent/WO2020232803A1/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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the invention relates to a motor, in particular to a brushless motor.
  • brushless motors Compared with traditional brush motors, brushless motors have the advantages of low noise, high energy efficiency and durability, and the application of brushless motors is becoming more and more widespread.
  • the brushless motor releases a large amount of heat during operation.
  • the brushless motor in the prior art often has the defect of insufficient heat dissipation, and the poor heat dissipation effect affects the performance of the brushless motor.
  • the present invention provides a brushless motor.
  • a brushless motor including a shaft, a stator, and a rotor; the rotor is rotatably arranged inside the stator; one side of the rotor is provided with a fan blade; the center of the rotor is opened There is a shaft hole, the shaft is inserted into the inside of the shaft hole; the two ends of the shaft are respectively provided with bearing A and bearing B; the outer side of the shaft hole is provided with a tuyere, and the tuyere is opened on the rotor along the axis of the shaft.
  • the multiple tuyere is symmetrical about the axial hole.
  • a through hole is provided between the shaft hole and the tuyere, and the through hole is opened on the rotor along the axial direction of the shaft; there are multiple through holes, and the multiple through holes are symmetrical about the shaft hole.
  • the through holes are respectively communicated with the tuyere at the corresponding position on the outside thereof.
  • the cross section of the tuyere is rectangular.
  • the through hole is a waist-shaped hole.
  • the through hole is a straight waist hole or an arc waist hole.
  • cross-section of the through hole is annular, polygonal or cross-shaped.
  • cross-section of the through hole is moon-shaped, semi-circular, oval or circular.
  • cross-section of the through hole is triangular, quadrilateral, or hexagonal.
  • the shaft hole is a spline hole.
  • the brushless motor of the present invention can realize ventilation and heat dissipation by opening air openings and through holes on the rotor, which effectively improves the heat dissipation effect of the brushless motor, improves its working performance, and the brushless motor runs more stably and has a longer service life;
  • the opening of the tuyere and the through hole on the rotor reduces the weight of the rotor and can increase the speed of the brushless motor.
  • Figure 1 is a schematic diagram of the structure of the present invention.
  • Figure 2 is a cross-sectional view of A-A in Figure 1;
  • Figure 3 is a left side view of Figure 1;
  • Figure 4 is a right side view of Figure 1;
  • Figure 5 is a schematic cross-sectional view of the rotor
  • Figure 6 is a schematic cross-sectional view of the rotor
  • Figure 7 is a schematic cross-sectional view of the rotor
  • Figure 8 is a schematic cross-sectional view of the rotor
  • Figure 9 is a schematic cross-sectional view of the rotor
  • Figure 10 is a schematic cross-sectional view of the rotor
  • Figure 11 is a schematic cross-sectional view of the rotor
  • Figure 12 is a schematic cross-sectional view of the rotor
  • Figure 13 is a schematic cross-sectional view of the rotor
  • Figure 14 is a schematic cross-sectional view of the rotor
  • Figure 15 is a schematic cross-sectional view of the rotor
  • Figure 16 is a schematic cross-sectional view of the rotor
  • Figure 17 is a schematic cross-sectional view of the rotor
  • Figure 18 is a schematic cross-sectional view of the rotor
  • Figure 19 is a schematic cross-sectional view of the rotor
  • Figure 20 is a schematic cross-sectional view of the rotor
  • Figure 21 is a schematic cross-sectional view of the rotor
  • a brushless motor includes a shaft 1, a stator 3, and a rotor 4; the rotor 4 is rotatably arranged inside the stator 3; a fan blade 5 is arranged on one side of the rotor 4; A shaft hole 7 is opened in the center, and the shaft 1 is inserted into the shaft hole 7; the two ends of the shaft 1 are respectively provided with a bearing A2 and a bearing B6; when the shaft 1 is set as a spline shaft, the shaft hole 7 is correspondingly set as a spline Hole, as shown in Figure 21.
  • a tuyere 8 is provided on the outer side of the shaft hole 7, and the tuyere 8 is opened on the rotor 4 along the axial direction of the shaft 1.
  • the cross section can be rectangular.
  • a through hole 9 is provided between the shaft hole 7 and the tuyere 8.
  • the through hole 9 is opened on the rotor 4 along the axial direction of the shaft 1; there are multiple through holes 9, and the multiple through holes are symmetrical with respect to the shaft hole 7.
  • the multiple tuyere and multiple through holes are symmetrically arranged with respect to the shaft hole 7 so that the overall weight of the rotor 4 is evenly distributed, and the stability of the rotor 4 during high-speed rotation is ensured.
  • the through holes 9 can be respectively communicated with the tuyere 8 at the corresponding position on the outside thereof.
  • the through hole 9 may be a waist hole, and the through hole 9 may be a straight waist hole as shown in FIG. 7 or an arc waist hole as shown in FIG. 8.
  • the cross-section of the through hole 9 may be in a ring shape, a moon shape as shown in FIG. 9, or a semicircle as shown in FIG. 10, or an oval shape as shown in FIG. 11, or a circular shape as shown in FIG. .
  • the cross section of the through hole 9 may also be polygonal, such as a triangle as shown in FIG. 13, or a quadrilateral as shown in FIGS. 14-17, or a hexagon as shown in FIGS. 18 and 19.
  • the cross-section of the through hole 9 may also be cross-shaped.
  • the brushless motor can realize ventilation and heat dissipation by opening air openings and through holes on the rotor, which effectively improves the heat dissipation effect of the brushless motor and improves its working performance.
  • the brushless motor runs more stable and has a longer service life;
  • the upper openings and through holes reduce the weight of the rotor and can increase the speed of the brushless motor.

Landscapes

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

Abstract

本发明公开了一种无刷马达，包括轴、定子、转子；转子可转动地设置于定子的内侧；转子的一侧设置有风叶；转子的中央开设有轴孔，轴插置于轴孔的内部；轴的两端分别设置有轴承A、轴承B；轴孔的外侧设置有风口，风口沿轴的轴向开设于转子上，风口为多个，多个风口关于轴孔对称；本发明的无刷马达通过在转子上开设风口和通孔，能够实现通风散热，有效地改善了无刷马达的散热效果，提高了其工作性能，无刷马达运行更稳定，使用寿命更长；并且在转子上开设风口和通孔减轻了转子的重量，能够提高无刷马达的转速。

Description

一种无刷马达 技术领域
本发明涉及一种马达，尤其涉及一种无刷马达。
背景技术
无刷马达与传统的刷式马达相比，具有低噪音、高能量效率和耐用性等优点，无刷马达的应用也越来越广泛。无刷马达在运行的过程中会释放大量的热，现有技术中的无刷马达常常出现散热不足的缺陷，散热效果差致使无刷马达的性能受到影响。
发明内容
为了解决上述技术所存在的不足之处，本发明提供了一种无刷马达。
为了解决以上技术问题，本发明采用的技术方案是：一种无刷马达，包括轴、定子、转子；转子可转动地设置于定子的内侧；转子的一侧设置有风叶；转子的中央开设有轴孔，轴插置于轴孔的内部；轴的两端分别设置有轴承A、轴承B；轴孔的外侧设置有风口，风口沿轴的轴向开设于转子上，风口为多个，多个风口关于轴孔对称。
进一步地、轴孔与风口之间设置有通孔，通孔沿轴的轴向开设于转子上；通孔为多个，多个通孔关于轴孔对称。
进一步地、通孔分别与其外侧对应位置的风口相连通。
进一步地、风口的横截面呈矩形。
进一步地、通孔为腰型孔。
进一步地、通孔为直腰型孔或弧形腰型孔。
进一步地、通孔的横截面呈环形或多边形或十字形。
进一步地、通孔的横截面呈月形或半圆形或椭圆形或圆形。
进一步地、通孔的横截面呈三边形或四边形或六边形。
进一步地、轴孔为花键孔。
本发明的无刷马达通过在转子上开设风口和通孔，能够实现通风散热，有效地改善了无刷马达的散热效果，提高了其工作性能，无刷马达运行更稳定，使用寿命更长；并且在转子上开设风口和通孔减轻了转子的重量，能够提高无刷马达的转速。
附图说明
图1为本发明的结构示意图。
图2为图1的A-A剖面图；
图3为图1的左视图；
图4为图1的右视图；
图5为的转子的横截面示意图；
图6为的转子的横截面示意图；
图7为的转子的横截面示意图；
图8为的转子的横截面示意图；
图9为的转子的横截面示意图；
图10为的转子的横截面示意图；
图11为的转子的横截面示意图；
图12为的转子的横截面示意图；
图13为的转子的横截面示意图；
图14为的转子的横截面示意图；
图15为的转子的横截面示意图；
图16为的转子的横截面示意图；
图17为的转子的横截面示意图；
图18为的转子的横截面示意图；
图19为的转子的横截面示意图；
图20为的转子的横截面示意图；
图21为的转子的横截面示意图；
图中：1、轴；2、轴承A；3、定子；4、转子；5、风叶；6、轴承B；7、轴孔；8、风口；9、通孔。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
如图1-4所示，一种无刷马达，包括轴1、定子3、转子4；转子4可转动地设置于定子3的内侧；转子4的一侧设置有风叶5；转子4的中央开设有轴孔7，轴1插置于轴孔7的内部；轴1的两端分别设置有轴承A2、轴承B6；当轴1设置为花键轴时，轴孔7对应设置为花键孔，如图21所示。
轴孔7的外侧设置有风口8，风口8沿轴1的轴向开设于转子4上，风口8为多个，多个风口关于轴孔7对称；风口8可以设计成各种形状，风口8的横截面可以呈矩形。
轴孔7与风口8之间设置有通孔9，通孔9沿轴1的轴向开设于转子4上；通孔9为多个，多个通孔关于轴孔7对称。
多个风口、多个通孔均关于轴孔7对称设置使得转子4的整体重量分布均匀，保证转子4在高速旋转工作过程中的稳定性。
如图5、6所示，通孔9可以分别与其外侧对应位置的风口8相连通。
通孔9可以为腰型孔，通孔9可以为如图7所示的直腰型孔或如图8所示的弧形腰型孔。
通孔9的横截面可以呈环形，呈如图9所示的月形，或如图10所示的半圆形，或如图11所示的椭圆形，或如图12所示的圆形。
通孔9的横截面还可以呈多边形，呈如图13所示的三边形，或如图14-17所示的四边形，或如图18、19所示的六边形。
如图20所示，通孔9的横截面还可以呈十字形。
无刷马达通过在转子上开设风口和通孔，能够实现通风散热，有效地改善了无刷马达的散热效果，提高了其工作性能，无刷马达运行更稳定，使用寿命更长；并且在转子上开设风口和通孔减轻了转子的重量，能够提高无刷马达的转速。
上述实施方式并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的技术方案范围内所做出的变化、改型、添加或替换，也均属于本发明的保护范围。

Claims (10)

  1. 一种无刷马达，其特征在于：包括轴(1)、定子(3)、转子(4)；所述转子(4)可转动地设置于定子(3)的内侧；所述转子(4)的一侧设置有风叶(5)；所述转子(4)的中央开设有轴孔(7)，轴(1)插置于轴孔(7)的内部；所述轴(1)的两端分别设置有轴承A(2)、轴承B(6)；所述轴孔(7)的外侧设置有风口(8)，风口(8)沿轴(1)的轴向开设于转子(4)上，风口(8)为多个，多个风口关于轴孔(7)对称。
  2. 根据权利要求1所述的无刷马达，其特征在于：所述轴孔(7)与风口(8)之间设置有通孔(9)，通孔(9)沿轴(1)的轴向开设于转子(4)上；所述通孔(9)为多个，多个通孔关于轴孔(7)对称。
  3. 根据权利要求2所述的无刷马达，其特征在于：所述通孔(9)分别与其外侧对应位置的风口(8)相连通。
  4. 根据权利要求2所述的无刷马达，其特征在于：所述风口(8)的横截面呈矩形。
  5. 根据权利要求2所述的无刷马达，其特征在于：所述通孔(9)为腰型孔。
  6. 根据权利要求5所述的无刷马达，其特征在于：所述通孔(9)为直腰型孔或弧形腰型孔。
  7. 根据权利要求2所述的无刷马达，其特征在于：所述通孔(9)的横截面呈环形或多边形或十字形。
  8. 根据权利要求7所述的无刷马达，其特征在于：所述通孔(9)的横截面呈月形或半圆形或椭圆形或圆形。
  9. 根据权利要求7所述的无刷马达，其特征在于：所述通孔(9)的横截面呈三边形或四边形或六边形。
  10. 根据权利要求2所述的无刷马达，其特征在于：所述轴孔(7)为花键孔。
PCT/CN2019/094890 2019-05-23 2019-07-05 一种无刷马达 WO2020232803A1 (zh)

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CN112671132A (zh) * 2020-12-05 2021-04-16 江苏铁锚工具股份有限公司 多对极直驱内转子马达、电链锯以及切割机

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