JPH0227017U

JPH0227017U -

Info

Publication number: JPH0227017U
Application number: JP10621588U
Authority: JP
Priority date: 1988-08-10
Filing date: 1988-08-10
Publication date: 1990-02-22

Description

[Brief explanation of drawings]

第１図は、この考案に係る静圧気体軸受装置の
第１の実施例を示す縦断正面図、第２図乃至第５
図は同上の他の実施例を示す縦断正面図、第６図
および第７図は従来の静圧気体軸受装置を示す縦
断正面図である。１…回転軸、２…軸受部材、３…ハウジング、
４…軸受スリーブ、５…軸受すきま、６…気体溜
り、７…給気孔、１０…磁気部材、１１…永久磁
石、１２…ヨーク、１４…磁性流体、１６…スラ
スト板、１７…ラジアル軸受すきま、１８…スラ
スト軸受すきま、２０…多孔質部材。 FIG. 1 is a longitudinal sectional front view showing a first embodiment of the hydrostatic gas bearing device according to the invention, and FIGS.
This figure is a longitudinal sectional front view showing another embodiment of the same as the above, and FIGS. 6 and 7 are longitudinal sectional front views showing a conventional hydrostatic gas bearing device. 1...Rotating shaft, 2...Bearing member, 3...Housing,
4... Bearing sleeve, 5... Bearing clearance, 6... Gas reservoir, 7... Air supply hole, 10... Magnetic member, 11... Permanent magnet, 12... Yoke, 14... Magnetic fluid, 16... Thrust plate, 17... Radial bearing clearance, 18... Thrust bearing clearance, 20... Porous member.

Claims

[Claims for Utility Model Registration] (1) A bearing clearance is formed between the opposing surfaces of a rotating member and a bearing member that supports it, and one of the rotating member and the bearing member is provided with a bearing clearance that is opposite to the bearing clearance. In a hydrostatic gas bearing device in which a gas reservoir is provided on a surface of the rotating member or the bearing member, and an air supply hole is formed in the rotating member or the bearing member to supply compressed gas to the bearing clearance through the gas reservoir, one of the rotating member and the bearing member A static pressure gas is characterized in that a magnetic member facing the other member through a gap is attached, and a magnetic fluid is held in the gap by magnetic flux crossing the gap between the magnetic member and the other member. Bearing device. (2) An annular porous member with air permeability that forms a bearing gap between the rotating member and the bearing member that supports it is attached to one of the facing surfaces of the rotating member and the bearing member that supports it, and the porous member is passed through the rotating member. In a hydrostatic gas bearing device that supplies compressed gas to a bearing clearance, one of the rotating member and the bearing member is equipped with a magnetic member that faces the other member with a clearance therebetween, and the magnetic member and the other A hydrostatic gas bearing device characterized in that a magnetic fluid is held in the gap by magnetic flux that crosses the gap between the members.