Patent ID: 6385052
Filing Date: 2002-05-07
Classification: H02M,H05K

Abstract:
Drive unit for electric motors, comprising a circuit board (10) formed with surface leads and carrying a number of logic components as well as power controlling semi-conductors (11), and two or more power distribution bars (16) extending along said circuit board (10) and being connected to a power source and/or one or more electric motor connections (18), each one of said power distribution bars (16) is formed as a sheet metal stamping having a side edge (35) from which a number of integrally formed connector pins (20) extend, said connector pins (20) are arranged to be received in apertures (22) in said circuit board (10) and to be rigidly connected to said surface leads for communication with said semi-conductors (11), c h a r a c t e r i z e d in thateach one of said power distribution bars (16) is formed from a flexible thin sheet metal and is folded along a longitudinal line (31) into at least two longitudinal sections (32,33), said at least one longitudinal line (31) is parallel with said side edge (35), a first one (32) of said sections is formed with said side edge (35) from which said connector pins (20) extend, and a second one (33) of said sections is located adjacent said first section (32) and is wider than said first section (32) such that said connector pins (20) extend only partially beyond said second section (33), wherein each one of said connector pins (20) is substantially Z-shaped for providing an increased flexibility.