JPS6191623U

JPS6191623U -

Info

Publication number: JPS6191623U
Application number: JP17566684U
Authority: JP
Priority date: 1984-11-21
Filing date: 1984-11-21
Publication date: 1986-06-13

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る動圧式気体軸
受の断面図、第２図は第１図の装置の拡大部分断
面図、第３図は第１図の−線に沿う部分断面
図、第４図はダンパプレートの部分斜視図、第５
図は軸の浮動支持状態を模式的に示した構成図、
第６図はダンパプレートが揺動した場合の軸の浮
動支持状態を模式的に示した構成図、である。１……動圧式気体軸受、２……軸受ケーシング
、２ａ……内周面、３……軸、４……トツプフオ
イル、５……バンプフオイル、６ａ，６ｂ，６ｃ
……ダンパプレート、６ａ′，６ｂ′，６ｃ′…
…軸受ケーシングに対向する面、７ａ，７ｂ，７
ｃ……セツテイングボール、９……付勢手段。 Fig. 1 is a sectional view of a hydrodynamic gas bearing according to an embodiment of the present invention, Fig. 2 is an enlarged partial sectional view of the device shown in Fig. 1, and Fig. 3 is a partial sectional view taken along the - line in Fig. 1. , FIG. 4 is a partial perspective view of the damper plate, and FIG. 5 is a partial perspective view of the damper plate.
The figure is a configuration diagram schematically showing the floating support state of the shaft.
FIG. 6 is a configuration diagram schematically showing the floating support state of the shaft when the damper plate swings. DESCRIPTION OF SYMBOLS 1... Hydrodynamic gas bearing, 2... Bearing casing, 2a... Inner peripheral surface, 3... Shaft, 4... Top oil, 5... Bump oil, 6a, 6b, 6c
...Damper plate, 6a', 6b', 6c'...
... Surface facing the bearing casing, 7a, 7b, 7
c...setting ball, 9...biasing means.

Claims

[Claims for Utility Model Registration] (1) A top oil that forms the inner circumferential surface of the bearing between the shaft and the bearing casing, and a bump oil that is provided on the back side of the top oil and has an uneven shape to provide elasticity. and
In a hydrodynamic gas bearing that supports the rotating shaft in a floating manner by using gas interposed between the bump oil and the bump oil as a lubricant, there is a space between the bump oil and the inner peripheral surface of the bearing casing in the circumferential direction. Consisting of a plurality of divided members, each member is supported so as to be swingable at least in a plane perpendicular to the axis of the shaft by a setting ball supported on the bearing casing side. A hydrodynamic gas bearing characterized in that a damper plate having an arc-shaped cross section is provided, the surface facing the peripheral surface having a larger curvature than the inner peripheral surface of the bearing casing. (2) At least one of the setting balls is floatingly supported by a biasing means that biases the setting ball in the axial direction of the shaft, as claimed in claim 1 of the utility model registration. hydrodynamic gas bearing.