Drive unit for electric motors including a circuit board with power distribution bars
US6385052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/1457
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.