Patent ID: 8469595
Filing Date: 2013-06-25
Classification: F16C,Y10T

Abstract:
1. A motion device comprising: an orbital element; and a moving element into which the orbital element is inserted, the moving element guided so as to be able to reciprocate in a longitudinal direction of the orbital element, wherein the moving element holds rolling elements therein, the rolling elements are sealed in an inner portion of the moving element by lids having direction changing paths of the rolling elements therein, the lids being installed at ends of the moving element in the longitudinal direction of the orbital element, exterior members are installed so as to cover the moving element and the lids, the moving element and the lids are fixed to each other by the exterior members, cylindrical protrusions into which the orbital element is inserted are formed at the ends of the moving element and protrude in the longitudinal direction of the orbital element so as to be pivotally supportable on bearings, and an outer diameter of each of the protrusions in a direction perpendicular to the longitudinal direction of the orbital element is smaller than an outer diameter of the moving element in that direction, and the protrusions are formed integrally with the exterior members.