Patent ID: 6433447
Filing Date: 2002-08-13
Classification: H02K

Abstract:
A linear/rotary actuator comprising:a linear motor including a hollow linear shaft acting as a movable element; an output shaft formed on forward and rearward portions thereof with forward and rearward spline sections each having a predetermined length, respectively; said output shaft having an intermediate portion on which said forward and rearward spline sections are not formed, said intermediate portion of said output shaft being rotatably inserted through said linear shaft by means of an intermediate bearing structure; a nut fitted on said forward spline section of said output shaft; a rotary driving motor for rotating said nut either directly or through a transmission mechanism, to thereby rotate said output shaft; and a rearward bearing structure including a fixed section having said rearward spline section fixed thereto; said rearward bearing structure supporting said rearward spline section so as to permit sliding of said rearward spline section in an axial direction of said actuator and rotation of said output shaft.