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High-efficiency precise DC brushless motor

A DC brushless and motor technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of high cost of permanent magnet brushless motors, short life and low efficiency of brushed coreless motors, and achieve simplified fan blades Assembly process, low noise, and simple assembly process

Active Publication Date: 2018-05-01
ONCE TOP MOTOR MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a high-efficiency precision brushless DC motor, which solves the problems of short life of the brushed coreless motor and high cost and low efficiency of the permanent magnet brushless motor, and at the same time has the advantages of stable operation, small vibration, Advantages of low noise and small size

Method used

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  • High-efficiency precise DC brushless motor

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Embodiment 1

[0029] like figure 1 As shown, it is a high-efficiency precision brushless DC motor proposed by the embodiment of the present invention, which includes an outer rotor assembly 1, a ring magnet 2, an armature winding assembly 3, and a laminated stator installed on the same axis from top to bottom. 4 and the frame assembly 5; wherein, the laminated stator 4 is installed on the middle cylinder of the frame assembly 5, the frame assembly 5 includes a flange 501, a bearing 7 and a gasket 6 arranged in the flange 501, and arranged on The middle cylinder above the flange 501, the front and rear ends of the flange 501 are provided with bearing chambers, and the bearing 7 is installed in the bearing chamber.

[0030] Further, a circular hole is opened in the middle of the ring magnet 2, and the rotating shaft 102 passes through the hole to set the ring magnet 2 in the casing 101 of the outer rotor assembly 1, and the ring magnet 2 and the casing 101 adopt clearance fit, And fixed by s...

Embodiment 2

[0043] like Image 6 Shown is the structure of another embodiment of the armature winding assembly 3 of the present invention. The armature winding assembly 3 includes a coreless armature winding 306 , a winding wire head 301 , a connecting buckle 302 and a terminal wire 303 . This solution is mainly aimed at the coreless armature winding 306 produced by the winding process.

[0044] In the second embodiment, an armature winding assembly 3 different from that in the first embodiment is used, and the rest of the components are connected by the same structure.

[0045] like Figure 7 As shown, when the present invention is applied to the direct-drive power motor of the UAV, the end of the front cover is provided with a self-locking structure of the UAV fan blade, which can easily install and disassemble the fan blade, thereby simplifying the assembly process of the UAV fan blade ; And it comes with self-locking structure of fan blades, which avoids the tedious process of screw...

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Abstract

The invention discloses a high-efficiency precise DC brushless motor. The motor comprise an outer rotor assembly, a circular magnet, an armature winding assembly, a laminated stator and a motor base assembly, wherein the outer rotor assembly, the circular magnet, the armature winding assembly, the laminated stator and the motor base assembly are sequentially installed on the same axis from the topto the bottom. The outer rotor assembly comprises a front end cover, a motor case and a rotating shaft, wherein the motor case and the rotating shaft are integrated with the front end cover in a mold-opening poured manner. The armature winding assembly comprises a hollow cup armature winding, a winding wire head connection board, and a terminal wire. The laminated stator is installed on a centralcylinder of the motor base assembly, and is formed by the lamination of a plurality of silicon steel pieces of a toothless groove structure. The motor base assembly comprises a flange, a baring, a gasket and a central cylinder disposed above the flange, wherein the bearing and the gasket are disposed in the flange. According to the invention, the assembly precision of the motor is improved, the assembly technology is simple and the cost is reduced. The operation of the motor is more stable, and the vibration and noise are reduced. Moreover, the utilization rate of space is higher, the reduction of the size of the motor is facilitated, and the power density of the motor is improved. The output efficiency of the motor is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of permanent magnet motors, in particular to a high-efficiency and precise DC brushless motor. Background technique [0002] The typical application field of high-efficiency and precision brushless DC motors is the drone industry. Taking drone power motors as an example, conventional permanent magnet brushless DC motors, coreless brushed motors and ordinary iron core brushed motors are mainly used at present. [0003] Among them, the stator of the conventional permanent magnet brushless DC motor is made of stacked silicon steel sheets with tooth groove structure, and the enamelled copper wire can be easily wound on the stator teeth, but there are some defects: first, there are A certain cogging torque makes the vibration and noise of the motor more obvious; second, there is still a certain waste of space after the stator with cogging is regularly wound with enameled wire; third, the stator with cogging struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/46H02K7/14H02K5/16H02K1/27H02K3/50H02K3/47
CPCH02K1/2786H02K3/46H02K3/47H02K3/50H02K5/16H02K7/14
Inventor 马开宏张子茂
Owner ONCE TOP MOTOR MFG
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