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A brushless DC motor rotor structure

A brushless DC motor and rotor structure technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve problems such as improving the dynamic performance of the motor, reducing the effect of inertia, and reducing the weight of the rotor

Active Publication Date: 2022-02-25
FOSHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Based on this, in order to solve the problem that the rotor of the existing DC brushless motor adopts the design of through-holes with evenly distributed small apertures in the inner ring of the rotor core to reduce the weight of the rotor and reduce the effect of inertia but cannot maximize the dynamic performance of the motor, the present invention provides A rotor structure of a DC brushless motor, the specific technical scheme of which is as follows:

Method used

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  • A brushless DC motor rotor structure
  • A brushless DC motor rotor structure
  • A brushless DC motor rotor structure

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0023] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0024] Unless otherwise defined, all technical and scientific t...

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Abstract

The invention provides a rotor structure of a DC brushless motor, which includes a rotating shaft and a rotor core. The rotating shaft passes through the axis of the rotor core and is fixedly connected with the rotor core. In the hollow part of the iron core, a plurality of hollow parts are evenly distributed along the axial direction of the rotor core, and an annular sealing chamber is also provided on the side wall of the rotor core, and the annular sealing chamber is located between the plurality of hollow parts and between the outer surfaces of the rotor core. The invention can significantly reduce the magnetic flux of the yoke of the rotor iron core, reduce the overall weight of the rotor structure of the DC brushless motor, improve the dynamic response performance of the motor, and provide better heat dissipation space for the DC brushless motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor structure of a DC brushless motor. Background technique [0002] Brushless DC motor is composed of permanent magnet rotor, multi-pole winding stator, position sensor, etc. It is a typical mechatronic product, with the advantages of high reliability, no commutation spark, low mechanical noise, etc. High-end recording sets, video recorders, electronic instruments and automated office equipment. [0003] With the in-depth development of energy saving and emission reduction, the electrification and intelligence of the automobile industry continue to make breakthroughs, and high-speed motors with small size and light weight will receive full attention. And this kind of small size, light weight high-speed motor will have good application prospects in the fields of automobile internal combustion engine electronic valve variable timing system, automobile turbocharging system, blo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/32
CPCH02K1/22H02K1/32
Inventor 王道勇李学军蒋玲莉肖冬明
Owner FOSHAN UNIVERSITY
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