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Brushless DC Motor

A brushed DC motor and motor shaft technology, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve problems such as motors that are difficult to solve, and achieve the effects of smooth rotation, wide application range, and low noise decibels

Active Publication Date: 2016-08-24
DONGGUAN WANRUI MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the market is fixed as a whole, and it is difficult to solve the technical difficulties plagued by the above-mentioned motors.

Method used

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Examples

Experimental program
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Embodiment Construction

[0040] The best embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] Such as Figure 1-3 As shown in and 8, the brushless DC motor described in the embodiment of the present invention includes a housing 1, a base 2, a fan 3, a front end cover 4, a rear end cover 5, a motor shaft 10, a rotor 11, a permanent magnet 12, and a stator 13, The shell 1 is a hollow cylinder structure, the front side of the shell 1 ferrules the front end cover 4, the rear side of the shell 1 ferrules the rear end cap 5, and the outer edges of the front end cap 4 and the rear end cap 5 are oppositely provided with connecting ears 7, The connecting ears 7 of the front end cover 4 and the rear end cover 5 are connected by the connecting rod 6, and the front end cover 4 and the rear end cover 5 are locked on both sides of the shell 1 by the connecting rod 6, which is convenient to use when landing. Ventilation holes 8 are res...

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PUM

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Abstract

A brushless direct current motor comprises a casing (1), a front end cover (4), a rear end cover (5), a motor shaft (10), a rotor (11), permanent magnets (12), and stators (13). The motor shaft (10) is sleeved and connected in the casing (1). Two ends of the motor shaft (10) sleeve and are connected to the axes of the front end cover (4) and the rear end cover (5) through bearings (17) respectively. The front end cover (4) and the rear end cover (5) each have an inner side provided with a hollow extension portion. The hollow extension portions sleeve the motor shaft (10). A stator (13) sleeves and is connected to an outer wall of each hollow extension portion. Outer sides of two stators (13) are provided with the rotor (11). The rotor (11) between the two stators (13) is connected to the motor shaft (10). An inner wall of the rotor (11) is provided with the permanent magnets (12) opposite to the stators (13). The permanent magnets (12) opposite to the two stators (13) are disposed in a staggered manner.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a brushless DC motor. Background technique [0002] There are roughly three types of DC motors currently on the market: ① brushed shaft drive motors, ② brushless shaft drive motors, and ③ brushless external rotation drive motors. The above three motors have their own disadvantages: [0003] Although the brush shaft drive motor uses a cheaper ferrite magnet, it is completed through the conversion of the carbon brush and the commutator, and the carbon brush is noisy and has a short life, and the use and maintenance costs of the brush motor are high. . [0004] Because the brushless shaft drive motor is driven by the inner rotor, the torque of the rotor is not enough, so it is necessary to use NdFeB magnets with strong magnetic properties to ensure the torque. However, the price of NdFeB materials on the market is quite expensive, so the cost of its magnets is high. [0005] Brus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/04H02K1/27H02K5/04H02K5/20H02K1/32
CPCH02K9/06H02K16/00H02K21/22
Inventor 郑胜巨
Owner DONGGUAN WANRUI MOTOR
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