METHOD FOR ASSEMBLING A COMMUTATOR ONTO THE SHAFT OF A ROTOR AND COMMUTATOR, SHAFT, ROTOR AND ROTOR ELECTRIC MACHINE FOR IMPLEMENTING THIS METHOD

Title:

METHOD FOR ASSEMBLING A COMMUTATOR ONTO THE SHAFT OF A ROTOR AND COMMUTATOR, SHAFT, ROTOR AND ROTOR ELECTRIC MACHINE FOR IMPLEMENTING THIS METHOD

Document Type and Number:

WIPO Patent Application WO/2012/066218

Kind Code:

A3

Abstract:

The method of assembly according to the invention involves force-fitting a commutator (3) onto the shaft (2) of a rotor. This force-fitting is over an externally knurled part (6) of one end (4) of the shaft. According to the invention, this force-fitting is performed in such a way that the externally knurled part remains located on the outside of a first portion (A) of the commutator supporting the slip rings (8). According to another feature, an internally knurled part (9) of the commutator, situated essentially on the outside of the first portion (A), is force-fitted over an externally plain part (7) of the end of the shaft. The invention has the notable advantage of allowing longer brush life. The invention is particularly well suited to applications to a motor vehicle alternator or alternator-starter.

Inventors:

GODEFROY GREGORY (FR)
DUGUE CHRISTOPHE (FR)
SASSANE KHALID (FR)

Application Number:

PCT/FR2011/052617

Publication Date:

November 29, 2012

Filing Date:

November 10, 2011

Export Citation:

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Assignee:

VALEO EQUIP ELECTR MOTEUR (FR)
GODEFROY GREGORY (FR)
DUGUE CHRISTOPHE (FR)
SASSANE KHALID (FR)

International Classes:

H01R39/14; H02K13/00

Foreign References:

US20020105242A1	2002-08-08
EP0094163A1	1983-11-16
DE1949285U	1966-11-10
DE102007032133A1	2009-01-02

Other References: