Patent ID: 8941271
Filing Date: 2015-01-27
Classification: H02K,H05K

Abstract:
1. A linear motor for lifting and lowering a suction nozzle, comprising: a frame; a slider having an mounting portion provided at a lower end thereof to allow the suction nozzle to be coupled thereto, the slider being support by the frame in a movable manner in an up and down direction; a plurality of permanent magnets fixed to the slider while being aligned in the up and down direction; a spring member installed between the frame and a region of the slider spaced from the fixation position of the permanent magnets in the up and down direction, to bias the slider upwardly; a coil supported by the frame in such a manner as to be opposed to the permanent magnets; and an encoder supported by the frame in side-by-side relation with the coil in the up and down direction and adapted to detect a movement of the slider, wherein the encoder and the spring member are arranged side-by-side in a horizontal direction.