Patent ID: 9373989
Filing Date: 2016-06-21
CPC Classification: H01R,H02K,H02P

Claim Text:
1. A Voltage regulator/brush-holder assembly in a single piece ( 1 ) for an alternator or alternator-starter rotary electrical machine of a motor vehicle, said brush-holder ( 6 ) adapted to guide at least first and second brushes, in contact with two corresponding collector rings of a rotor of said machine, by means of respective first and second longitudinal receptacles ( 7 ) provided in the direction of said collector rings, in a substantially parallelepiped body ( 6 ) made of electrically insulating material which extends substantially on an axial plane of said rotor, each of said first and second receptacles ( 7 ) being provided with at least a respective first inner longitudinal groove ( 9 ) positioned alongside and parallel respectively to said first and second receptacles, and further in communication with at least one channel ( 11 ), which is provided in said body and extends in an axial direction (XX′) of said rotor, and is designed to have a cooling fluid ( 8 , 12 ) passing through it, wherein a first straight section of said first inner groove ( 9 ) has a cross sectional area of between 5% and 7% of a cross sectional area of a second straight section of said receptacles ( 7 ).