Patent ID: 8302498
Filing Date: 2012-11-06
Classification: F16C,F16H,Y10T

Abstract:
1. A sealed linear actuator unit, comprising: an outer rail, having a substantially cylindrical shape which includes a hollow portion therein, and further includes a slit-opening portion disposed along an axial direction thereof; an inner block, disposed in the hollow portion of the outer rail, and which is movable along a longitudinal direction of the outer rail; a driving means, which is coupled to the inner block in the hollow portion of the outer rail, and causes the inner block to reciprocate along the longitudinal direction of the outer rail; a slide plate, disposed outside of the slit-opening portion of the outer rail, and which is coupled to the inner block through the slit-opening portion; a cover belt, which is tensioned between both ends in the longitudinal direction of the outer rail so as to cover the slit-opening portion; a belt-guiding member, including a separating portion which separates the cover belt from the outer rail corresponding to movement of the slide plate so as to cause the cover belt to climb over the slide plate; and a seal member fixed to the belt-guiding member, which seals between the belt-guiding member and the cover belt and between the belt-guiding member and the outer rail so as to prevent dust from getting into the hollow portion of the outer rail, wherein the seal member further includes,