公开(公告)号：EP1332543B1

公开(公告)日：2005-03-23

申请号：EP01979028.6

申请日：2001-11-06

申请人： Hitachi, Ltd.

发明人： KIM, Houng Joong, c/o Hitachikenkyusho ,  SEINO, Hiromitsu, c/o Hitachikenkyusho ,  NAGANUMA, Ryouichi, c/o Hitachikenkyusho ,  TOYODA, Hiroshi, c/o Hitachikenkyusho ,  MAKI, Kohji, c/o Hitachikenkyusho

IPC分类号： H02K41/025 ,  H02K41/02

CPC分类号： H02K41/031

摘要： A linear motor and a method of producing the linear motor are provided to reduce a leak magnetic flux flowing between an armature and a moving element to reduce a one-direction magnetic attraction force generated between the armature and the moving element. The linear motor includes the armature having a core formed of a magnetic body and a winding wound around the core, and the moving element supported so as for the moving element to move relatively to the armature via a gap, magnetic pole teeth disposed above and below the moving element, disposed at predetermined pitches along a moving direction of the moving element and disposed opposite to each other via the moving element, and a winding for exciting the magnetic pole teeth such that adjacent and opposite magnetic pole teeth have different magnetic poles, and the moving element is reciprocated relatively to the armature by exciting the winding according to a predetermined control circuit.