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Brushless DC motor and stator thereof

A DC motor and stator technology, applied in electrical components, electromechanical devices, etc., can solve the problems of high production cost, inconvenient assembly, poor axial height and poor running stability.

Active Publication Date: 2010-12-29
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a brushless DC motor, which is used to solve the problems of high manufacturing cost, inconvenient assembly, difficult reduction of axial height and poor running stability of existing outer rotor motors, inner rotor motors and their stators. purpose of invention

Method used

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  • Brushless DC motor and stator thereof
  • Brushless DC motor and stator thereof
  • Brushless DC motor and stator thereof

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Embodiment Construction

[0077] In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

[0078] Please refer to Figure 5 and Figure 6 As shown, the brushless DC motor 1 of the first embodiment of the present invention discloses an “external rotor motor”. The brushless DC motor 1 includes a base 11 , a circuit board 12 , a stator 13 and a rotor 14 .

[0079] The base 11 has a pivot portion 111, the pivot portion 111 can be a shaft tube, a shaft seat or other structures that can be rotatably combined with the rotor 13; in the embodiment shown in the figure, the The pivoting portion 111 is a shaft tube, which can accommodate components such as the fixing ring 112 , the retaining piece 113 , the bearing 114 or the wear-resistant piece 115 , so that the rotor 14 can rotate s...

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PUM

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Abstract

The invention relates to a brushless DC motor and a stator thereof. The stator comprises an insulating ring and a coil assembly, wherein the insulating ring is an integral-forming ring body made of insulating material; the ring body is provided with an external ring surface and an internal ring surface; at least one of the external ring surface and the internal ring surface extends to form a plurality of winding parts; and the coil assembly winds around the winding parts. Thus, the stator can be used in an outer rotor motor or inner rotor motor so as to utilize the characteristic of the stator in which the traditional silicon steel sheet is omitted; and therefore, the invention has the advantages of low manufacturing cost, convenient assembling and the like, can reduce the axial height and can enhance the running stability.

Description

technical field [0001] The invention relates to a brushless direct current motor and its stator, in particular to a stator which can omit the traditional silicon steel sheet, and a brushless direct current motor with the stator. Background technique [0002] The common brushless DC motors in the market can be roughly divided into outer rotor type motors and inner rotor type motors. Among them, the outer rotor motor usually has the characteristics of simple structure, good heat dissipation and relatively low price; the inner rotor motor has the characteristics of good rotation stability and the like. [0003] Please refer to figure 1 As shown, the conventional external rotor motor 8 roughly includes a base 81 , a stator 82 and a rotor 83 . The base 81 has a shaft tube 811 ; the stator 82 is coupled to the outer peripheral surface of the shaft tube 811 ; the rotor 83 is provided with a permanent magnet 831 , and the rotor 83 is rotatably coupled to the shaft tube 811 . Ther...

Claims

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Application Information

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IPC IPC(8): H02K29/00
Inventor 洪银树尹佐国
Owner SUNONWEALTH ELECTRIC MACHINE IND
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