Patent ID: 6894410
Filing Date: 2005-05-17
Classification: H02K,Y10T

Abstract:
1. A centralized power distribution unit for a vehicular thin brushless motor, wherein said centralized power distribution unit is formed into a ring configuration and can concentratedly distribute current to stator windings of the motor, comprising: a plurality of bus bars each having a terminal portion to be connected to a power source and one or more tabs to be connected respectively to one or more of the stator windings, the bus bars provided correspondingly with phases of the motor; and a resin insulating layer that covers the bus bars, wherein each of the bus bars comprises a metal strip that is bent, in a thickness direction of the metal strip, into a substantially annular shape, and diameters of the annular shapes of the bus bars are set to be different from one another depending on the corresponding motor phase, the bus bars are stacked in a radial direction of the centralized power distribution unit, mutually separated by a predetermined gap, and at least one of the terminal portions includes a first section extending in a first direction that is a substantially radial direction of the centralized power distribution unit, a second section extending in a second direction substantially perpendicular to the first direction, and a ramp section connecting the first and second sections and extending in a third direction that is different from the first and second directions.