JPS63166719U

JPS63166719U -

Info

Publication number: JPS63166719U
Application number: JP1987058755U
Authority: JP
Priority date: 1987-04-20
Filing date: 1987-04-20
Publication date: 1988-10-31

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る動圧式ジヤー
ナル気体軸受の縦断面図で、第２図の―線に
沿う断面図、第２図は第１図の装置の横断面図、
第３図は第１図の装置のバンプフオイルの拡大部
分斜視図、第４図は第１図の装置の変形例に係る
バンプフオイル端部近傍の部分断面図、第５図は
軸受ケーシングの動圧式ジヤーナル気体軸受の横
断面図、第６図は第５図の装置のバンプフオイル
の拡大部分斜視図、である。１１……回転軸、１２……軸受ケーシング、１
３……内周面、１４……円弧部、１５……バンプ
フオイル、１６……着座部、１７……キー、１８
……トツプフオイル、１９……軸心、２０，２６
……突出部、２１ａ，２１ｂ，２７……押圧固定
手段、２３……軸受ハウジング。 FIG. 1 is a longitudinal cross-sectional view of a hydrodynamic journal gas bearing according to an embodiment of the present invention, a cross-sectional view taken along the line - in FIG. 2, and FIG. 2 is a cross-sectional view of the device shown in FIG.
3 is an enlarged partial perspective view of the bump oil in the device shown in FIG. 1, FIG. 4 is a partial sectional view near the end of the bump oil according to a modification of the device shown in FIG. 1, and FIG. 5 is a hydrodynamic journal of the bearing casing. FIG. 6 is a cross-sectional view of the gas bearing, and FIG. 6 is an enlarged partial perspective view of the bump oil of the device of FIG. 11... Rotating shaft, 12... Bearing casing, 1
3... Inner peripheral surface, 14... Arc portion, 15... Bump oil, 16... Seating portion, 17... Key, 18
... Topf oil, 19 ... Shaft center, 20, 26
...Protruding portion, 21a, 21b, 27...Press fixing means, 23...Bearing housing.

Claims

[Scope of utility model registration request]

On the inner circumferential surface of the bearing casing, a bump oil having an uneven shape in which a large number of arcuate sections having an arcuate cross section are arranged along the circumferential direction of the inner circumferential surface is arranged, and a bump oil from a thin plate is arranged on the inner circumferential side of the bump oil. In a hydrodynamic journal gas bearing, in which a topf oil is disposed to elastically support the topf oil, and a rotating shaft disposed within the topf oil is supported via a gas film between the topf oil and the topf oil, The seating portion of the end portion in the direction along the axial center of the rotating shaft, which is seated on the inner circumferential surface of the bearing casing, is made to protrude in the direction along the axial center of the rotating shaft, and the protruding portion is fixed to the bearing casing by pressing and fixing means. What is claimed is: 1. A hydrodynamic journal gas bearing, characterized in that it is movable in the circumferential direction of the inner circumferential surface and is press-fixed in the radial direction with respect to the inner circumferential surface of the bearing.