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Rotary sealed brushless direct-current motor

A brushed DC motor, rotary technology, applied in the field of brushless DC motors, can solve problems such as printed circuit board deformation, Hall component failure, etc., to achieve the effect of preventing failure, realizing adjustment, and ensuring coaxiality

Active Publication Date: 2016-12-07
沈阳兴华航空电器有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil medium will cause the Hall components to fail, and the printed circuit board will be deformed if it is soaked in oil for a long time

Method used

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  • Rotary sealed brushless direct-current motor
  • Rotary sealed brushless direct-current motor
  • Rotary sealed brushless direct-current motor

Examples

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] A rotary sealed brushless DC motor such as figure 1 , 2 As shown, it includes: including: housing 1, stator 2, rotor 3, rear cover assembly 4, bearing 5, circuit board assembly 6, sensor rotor 7, sealing ring 8; rear cover assembly 4 is connected to the tail of housing 1 and passed through The sealing ring 8 forms a sealing structure, the stator 2 is installed inside the housing 1, the rotor 3 is installed on the housing 1 and the rear cover assembly 4 through the bearing 5, the sensor rotor 7 is fixed at the tail of the rotor 3, and the circuit board assembly 6 is installed on the rear cover Outside the assembly 4; the circuit board assembly 6 includes a circuit board 6a and a Hall element 6b, the Hall element 6b is welded on the circuit board 6a, and the internal corrosion of the circuit board 6a, Hall element 6b and the motor is realized th...

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PUM

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Abstract

The invention discloses a rotary sealed brushless direct-current motor. The rotary sealed brushless direct-current motor comprises a shell, a stator, a rotor, a rear cover assembly, a bearing, a circuit board assembly, a sensor rotor and a seal ring, wherein the rear cover assembly is connected with the tail of the shell, and a sealed structure is formed through the seal ring; the stator is arranged inside the shell; the rotor is arranged on the shell and the rear cover assembly through the bearing; the sensor rotor is fixed to the tail of the rotor; the circuit board assembly is arranged on the outside of the rear cover assembly; the circuit board assembly comprises a circuit board and a Hall component, and the Hall component is welded onto the circuit board. According to the rotary sealed brushless direct-current motor, the Hall component and the circuit board are effectively isolated from corrosive liquid, and the failures of the Hall component and the circuit under the influence of a working medium are prevented. Through an annular structure of mounting grooves of the circuit board and the rear cover assembly, the coaxiality of the Hall component and the sensor rotor is guaranteed, and the angular adjustment of the Hall component is also realized.

Description

technical field [0001] The invention relates to a brushless direct current motor, in particular to a rotary sealed brushless direct current motor. Background technique [0002] Brushless DC motors have many advantages such as small size, high speed, high efficiency, and easy control, and are widely used in aerospace, rail transit, electric locomotives, precision machine tools and other fields. [0003] For oil pump motors, the working medium is generally corrosive liquid. In order to increase the lubricity of the bearing, a liquid flow channel is designed in the inner cavity of this type of motor to make the working medium fill the inside of the motor. The oil medium will cause the Hall components to fail, and the printed circuit board will be deformed if it is soaked in oil for a long time. [0004] Therefore, there is an urgent need for a structurally reasonable brushless DC motor. Contents of the invention [0005] The object of the present invention is to provide a r...

Claims

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Application Information

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IPC IPC(8): H02K29/08H02K5/10H02K11/215
CPCH02K5/10H02K29/08
Inventor 乔春雨杨群张彦修
Owner 沈阳兴华航空电器有限责任公司
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