Rail carbon brush device of brush motor

A brushed motor and carbon brush technology, applied in electromechanical devices, electrical components, etc., can solve the problems of carbon brush instability, increased cost, increased electrical noise, etc., and achieve the effect of heat dissipation

Active Publication Date: 2010-09-01
JOHNSON ELECTRIC SHENZHEN
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scheme, more metal materials are used, which increases the cost
In addition, the metal guide rail is fixed to the end cover through a rubber washer. The rubber washer plays the role of electrical insulatio

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
  • Rail carbon brush device of brush motor
  • Rail carbon brush device of brush motor
  • Rail carbon brush device of brush motor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] figure 1 It is an exploded schematic diagram of a PMDC motor 10 according to a preferred embodiment of the present invention. The motor 10 includes a stator 11, a rotor 12, and a carbon brush device. The stator 11 includes permanent magnetic poles, and the rotor 12 includes a winding 13 and a commutator 14. The carbon brush device uses the commutator to transfer electrical energy from the motor terminals (not shown in the figure). Shown) transfer to winding 13. The carbon brush device includes a carbon brush base plate 16 and a plurality of carbon brush assemblies 17 supported by the carbon brush base plate 16, and the carbon brush base plate 16 is fixedly installed on the end cover of the foundation. Each carbon brush assembly 17 includes a carbon brush, a guide system in the form of a guide rail, and a spring. The guide system is used to guide the carbon brush to slide toward the commutator, and the spring elastically drives the carbon brush to slide along the guide ra...

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 provides a rail carbon brush device of a brush motor, which comprises a carbon brush substrate (16) and at least two carbon brush components (17), wherein the carbon brush substrate (16) is an isolator and is used for supporting the carbon brush components (17); each carbon brush component (17) comprises a carbon brush (20), an elastic piece (30) and a pair of guide rails (36) fixedon the carbon brush substrate (16); a concave chute (21) is formed on the opposite surfaces of the carbon brush respectively and is arranged on the guide rails (36); the end of the elastic piece (30)is connected to the carbon brush (20) and the elastic piece (30) elastically drives the carbon brush (20) to slide to a motor commutator along the guide rails (36); the guide rails (36) consist of edges of rigid guide plates (35); and the guide plates (35) are substantially parallel to the carbon brush substrate (16) and are fixed on the carbon brush substrate (16). In the rail carbon brush device of the invention, the carbon brush can be stably supported by the rails and can be exposed in the air to the largest extent so as to conveniently dissipate heat.

Description

technical field [0001] The invention relates to the field of brushed motors, in particular to a rail carbon brush device of a permanent magnet direct current (PMDC) brushed motor. Background technique [0002] The tracked carbon brush device includes carbon brushes and a pair of guide rails, and the opposite two sides of the carbon brushes have slide grooves. The guide rail is located in the chute, so that the carbon brush can slide along the guide rail to the commutator of the motor, and is in frictional contact with the commutator under the action of the spring. US patents US4,559,465 and US6,020,668 disclose this type of guide rail carbon brush device. [0003] The tracked carbon brush device provided by US Pat. No. 4,559,465 includes a guide rail, a carbon brush with a chute, and a carbon brush substrate for fixing the guide rail. The guide rail and the carbon brush substrate are both plastic parts, and the two are integrated into one. The disadvantage of this carbon b...

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
IPC IPC(8): H02K13/10
Inventor 秦锐锋徐厅团谢小五
Owner JOHNSON ELECTRIC SHENZHEN
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