| 摘要 |
A drive unit for power control of electric motors comprises a circuit board (10) with surface leads and a number of logic components as well as power controlling semi-conductors (11), and two or more power distribution bars (16) which extend along the circuit board (10) and are connected to a power source and/or one or more motor connections. Each of the power distribution bars (16) is a sheet metal stamping formed with a number of integral connector pins (20) which are to be received in a number of apertures (22) in the circuit board (10) and rigidly connected to the surface leads for communication with the semi-conductors (11). Each one of the power distribution bars (16) is stamped from a flexible thin sheet metal and is folded along a longitudinal line (31) into two parallel sections (32,33). The connector pins (20) extend from a first one (32) of the two sections (32,33). Each one of the connector pins (20) is substantially Z-shaped for providing an increased flexibility and for forming together with a second one (33) of the two sections (32,33) a fixing device for a ferrite ring element (28).
|
