Patent ID: 6619846
Filing Date: 2003-09-16
Classification: F16C,F16H

Abstract:
An actuator comprising:a frame; a driving source connected to said frame; a driving force-transmitting mechanism for transmitting a driving force of said driving source; a slider for making reciprocating motion in an axial direction of said frame in accordance with an action of the driving force transmitted by said driving force-transmitting mechanism; and a guide mechanism for guiding said slider when said slider is displaced along said frame, wherein: said guide mechanism includes a first guide rail having a circular arc-shaped cross section, said first guide rail being immovably installed in a first long groove having a circular arc-shaped cross section formed on an inner wall surface of said frame, and a second guide rail having a circular arc-shaped cross section, said second guide rail being immovably installed in a second long groove having a circular arc-shaped cross section formed on a side surface of said slider opposed to said inner wall surface of said frame, and said guide mechanism includes a first slide cover and a second slide cover which have different configurations, said first slide cover is installed to a first end side in said axial direction of said slider, and said second slide cover is installed to a second end side of said slider arranged with said driving source disposed on said side opposite to said first slide cover.