Patent ID: 7262528
Filing Date: 2007-08-28
Classification: H02K

Abstract:
1. A motor unit comprising: a motor including a speed reduction mechanism, said speed reduction mechanism including an output shaft having a base end and a distal end opposite said base end and projecting outward from a main section of said speed reduction mechanism; a case frame containing said speed reduction mechanism; a cover assembly fitted to an upper side of said case frame and containing a drive control section having a control circuit for driving said motor, said drive control section including: a metal bus bar arranged between said first circuit component containing section and said second circuit component containing section so as to electrically connect said signal system circuit components to said power system circuit components, said power system circuit components being mounted directly on said metal bus bar, only said signal system circuit components being mounted on said printed wiring board, and said metal bus bar being operable to absorb noise generated by said power system circuit components and said signal system circuit components.