Patent ID: 6441531
Filing Date: 2002-08-27
Classification: H02K

Abstract:
A stator assembly for a motor, comprising:a bobbin including a winding wound therearound, the bobbin further including an upper side and a lower side; an one upper pole plate assembly comprising at least two upper pole plates stacked to the upper side of the bobbin, each said upper pole plate including a plurality of radial poles, a magnetic pole face projecting from each said radial pole of each said upper pole plate and extending along a direction parallel to a longitudinal direction of the upper pole plate, the magnetic pole faces of each said upper pole plate forming an overall upper magnetic pole face of the upper pole plate assembly; and a lower pole plate assembly comprising at least two lower pole plates stacked to the lower side of the bobbin, each said lower pole plate including a plurality of radial poles, a magnetic pole face projecting from each said radial pole of each said lower pole plate and extending along a direction parallel to a longitudinal direction of the lower pole plate, the magnetic pole faces of each said lower pole plate forming an overall lower magnetic pole face of the lower pole plate assembly.