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Method of fabricating a commutator for a motor

A commutator and engine technology, which is applied in the direction of commutator manufacturing, stator/rotor body manufacturing, electromechanical devices, etc., can solve problems such as short service life of commutators, and achieve the effect of increasing service life and preventing carbonization

Inactive Publication Date: 2005-03-09
SAMSUNG GWANGJU ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] As mentioned above, commutators manufactured by conventional methods have a short service life because of wear of brushes and round sparks caused by sparks causing defects due to coking, carbonization or burning

Method used

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  • Method of fabricating a commutator for a motor
  • Method of fabricating a commutator for a motor
  • Method of fabricating a commutator for a motor

Examples

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Embodiment Construction

[0027] image 3 is a step-by-step flow diagram illustrating a method of manufacturing an engine commutator according to an embodiment of the present invention. Such as image 3 As shown, the inspection step S1 is carried out on the round copper rod. Pure copper wire may be used for the rod and, perhaps more preferably, an alloy containing a silver (Ag) additive ranging from at least 0.01% by weight to a maximum of 2% by weight may be used.

[0028] Then, the round rod is subjected to a stretching step S2 to form a sheet with a desired thickness.

[0029] The sheet formed by the stretching step is cut into a predetermined size to form a commutator segment (step S3).

[0030] The commutator segments are then rinsed by using a mixed solution consisting of detergent, water and lactic acid (step S4).

[0031] After rinsing, the commutator segments are immersed in liquid nitrogen for 15 to 25 minutes (step S5). In one embodiment, the temperature of the liquid nitrogen may be, o...

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Abstract

A method of fabricating a commutator for a motor comprises the steps of: drawing a bar into the shape of a plate; forming plural commutator segments having a predetermined size by cutting the plate at appropriate intervals; heat-processing the commutator segments with liquefied nitrogen; inserting the heat-processed commutator segments, and setting the commutator segments in a mold in a circular pattern having a predetermined gap from one another for receiving insulating resin, and inserting a bushing in a central position of the circular pattern of commutator segments; forming an insulating resin layer in the gaps between the commutator segments by extruding or injecting an insulating resin into the mold; and finishing an inner diameter and an outer diameter of the fabricated commutator.

Description

technical field [0001] The present invention relates generally to a method of manufacturing an engine commutator, and more particularly, to a method of manufacturing an engine commutator capable of preventing the commutator from being extremely worn due to friction with brushes, and the commutator The guide has improved wear resistance. Background technique [0002] Generally, a commutator of an engine includes: a plurality of segments arranged in an annular manner within the engine; an insulating resin for insulating each segment from its adjacent segments; and a bushing. The commutator segments are generally made of 100% copper (Cu), and a bushing is arranged at the center of the insulating resin to allow the shaft of the rotor to be inserted thereinto. [0003] A method for manufacturing a slice engine commutator is widely used in the manufacture of engine commutators. According to the manufacturing method of the plate type engine commutator, a plurality of segments are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K13/00H01R43/06H02K15/02
CPCY10T29/49011H01R43/06H02K13/00
Inventor 李千懋
Owner SAMSUNG GWANGJU ELECTRONICS CO LTD
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