LINEAR FLEXURE BEARING

摘要

PURPOSE: A linear flexure bearing is provided to have high radial stiffness and low axial stiffness by optimally designing a diaphragm and a spacer with regard to shapes changed to reciprocating motions of a shaft and to expand life span by receiving less stress caused by torsion. CONSTITUTION: A linear flexure bearing is composed of a diaphragm, an inner spacer(30), and an outer spacer(40). The diaphragm comprises a circular ring shaped hub; hub arms formed at equal angles to the outer periphery of the hub and radially arranged; a circular ring-shaped rim for surrounding the hub and the hub arm; rim arms radially formed to the inner periphery of the rim with the same number of the hub arms; and flexure blades formed in a circular arc shape between opposite sides of the hub arm and the rim arm, which are not adjacent to each other. The inner spacer fixed to correspond to the shape of the hub includes a hub spacer(32) formed in a same shape with the hub; hub spacer arms(34a,34b,34c) arranged to the outer periphery of the hub spacer; and supporting projections(36) formed at the edge of the hub spacer arms. The outer spacer fixed to correspond to the rim includes a rim spacer(41) having a same shape with the rim; rim spacer arms(43a,43b,43c) formed to the inner periphery of the rim spacer; and supporting projections(45) formed to the edge of the rim spacer arms.