Patent ID: 6636384
Filing Date: 2003-10-21
Classification: G11B

Abstract:
An electromagnetic linear actuator comprising:a fixed portion; a movable portion holding an object; and a guide coupled to said fixed portion and said movable portion for guiding said movable portion to be movable with respect to said fixed portion only in a predetermined direction, said guide comprising: a guide shaft fixed to said fixed portion and extending in said predetermined direction, said guide shaft having a first and a second portion which are apart from each other in said predetermined direction; a bearing connected to said movable portion and coupled to said guide shaft so as to be slidable along said guide shaft; and a first and a second damper having elasticity and directly attached to said first and said second portions of the guide shaft by said elasticity, respectively, said first and said second dampers limiting a stroke of said movable portion and absorbing mechanical shock of said movable portion.