Motor Bearing Anti-corrosion Structure and Brushless DC Motor

An electrical corrosion and bearing technology, applied in structural connection, electrical components, electromechanical devices, etc., can solve the problems of poor structural reliability and easy failure of motor bearings against electrical corrosion, to ensure long-term stable reliability, high connection reliability, Guaranteed stable and reliable effect

Active Publication Date: 2017-06-06
GUANGDONG WELLING ELECTRIC MACHINE MFG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a motor bearing anti-corrosion structure and a brushless DC motor, which solve the technical problems of poor reliability and easy failure of the motor bearing anti-corrosion structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Motor Bearing Anti-corrosion Structure and Brushless DC Motor
  • Motor Bearing Anti-corrosion Structure and Brushless DC Motor
  • Motor Bearing Anti-corrosion Structure and Brushless DC Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or there may be an intervening element at the same time. 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.

[0031] Such as figure 1 and figure 2 As shown, the electric motor bearing anti-corrosion structure provided by the embodiment of the present invention includes a stator core 1, a conductive locking member 4, a conductive nu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention is applicable to the field of motors, and discloses a motor bearing anti-corrosion structure and a brushless DC motor. The motor bearing anti-corrosion structure includes a stator iron core, a conductive locking piece, a conductive nut assembly, a plastic-encapsulated casing and a cover fixed to the plastic-encapsulated casing. The first end cover at one end, the conductive nut assembly and the stator iron core are packaged and fixed in the plastic casing, and one end of the conductive nut assembly is connected with the stator iron core, and the other end is exposed outside the plastic casing. One end of the conductive locking piece is clamped outside the through hole, the other end passes through the through hole, and is screwed to the end of the conductive nut assembly exposed outside the plastic casing. The present invention realizes the conductive connection between the stator iron core and the first end cover through the cooperation of the conductive locking member and the conductive nut assembly, effectively preventing the occurrence of electrical corrosion of the bearing; The long-term reliability of the end cover conduction ensures the long-term effectiveness of the motor's anti-corrosion structure of the bearing.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a motor bearing electric corrosion prevention structure and a brushless DC motor with the motor bearing electric corrosion prevention structure. Background technique [0002] DC motors are generally driven by inverters with inverter modulation (PWM). Since the high-frequency changing current will cause a voltage difference between the inner and outer rings of the bearing, when the voltage difference reaches the voltage that can break down the oil film of the bearing, a small current will pass through the bearing raceway and the bearing ball , As a result, the bearing ball and the bearing channel are damaged and the bearing emits abnormal noise, that is, the electric corrosion phenomenon occurs in the bearing, which seriously affects the service life of the bearing. [0003] In order to solve the above technical problems, the prior art proposes a solution of using metal pins to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/40H02K11/00
Inventor 唐剑武李国雄刘贤史国俊
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap