Patent ID: 6827495
Filing Date: 2004-12-07
Classification: F16C,G11B,H02K

Abstract:
A fluid bearing device comprising a hollow shaft having a threaded hole extending therethrough and one end formed with a connection portion with a first inner diameter, a thrust plate in a disk shave having a through hole with a second inner diameter, the thrust plate having at least first and second flat surfaces, a first sleeve provided to face the shaft through a radial fluid bearing clearance therebetween, the first sleeve having an end surface which faces the first flat surface of the thrust plate, a second sleeve having a second sleeve flat surface which faces the second flat surface of the thrust plate, wherein a thrust fluid bearing is formed between the end surface of the first sleeve and the first flat surface of the thrust plate and between the second sleeve flat surface and the second flat surface of the thrust plate, and a set screw having a head a cylindrical section with a first outer diameter and a threaded tip portion, wherein the hollow shaft connection portion is being formed in one of convex and concave shapes, and the thrust plate is being guided by the connection portion and the set screw cylindrical section such that the thrust plate it is coaxial with the shaft, and the thrust plate is fixed between the shaft and the set screw through screw-tightening between the threaded hole extending through the shaft and the threaded tip portion of the set screw, and wherein the first inner diameter of the connection portion, second inner diameter of the thrust plate through hole and the inner diameter of the set screw cylindrical section are substantially the same.