JPS63115918U

JPS63115918U -

Info

Publication number: JPS63115918U
Application number: JP580887U
Authority: JP
Priority date: 1987-01-19
Filing date: 1987-01-19
Publication date: 1988-07-26
Also published as: JPH0313614Y2

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例に係り、第１
図は一部切断した要部正面図、第２図はスラスト
軸受部材の斜視図、第３図及び第４図は原理説明
図、第５図は従来例に係る一部切断した要部正面
図である。図中、１は軸体、２はラジアル外周面、３はス
ラスト端面、４は動圧発生用の溝、５はスリーブ
、６はラジアル内周面、１０は流入口、１１はポ
ケツト、１２はスラスト軸受部材、１３はスラス
ト底面、１４は円周面、１５は環状溝、１６は弧
状外周部、１７は切り欠き部である。 Figures 1 to 4 relate to embodiments of the present invention;
The figure is a partially cut-away front view of the main part, Fig. 2 is a perspective view of the thrust bearing member, Figs. 3 and 4 are diagrams explaining the principle, and Fig. 5 is a partially cut-away front view of the main part of the conventional example. It is. In the figure, 1 is a shaft body, 2 is a radial outer peripheral surface, 3 is a thrust end surface, 4 is a groove for generating dynamic pressure, 5 is a sleeve, 6 is a radial inner peripheral surface, 10 is an inlet, 11 is a pocket, and 12 is a In the thrust bearing member, 13 is a thrust bottom surface, 14 is a circumferential surface, 15 is an annular groove, 16 is an arcuate outer periphery, and 17 is a notch.

Claims

[Claims for Utility Model Registration] The sleeve side is provided with a radial inner peripheral surface and a thrust bottom surface, and the shaft body side is provided with a radial outer peripheral surface that cooperates with the radial inner peripheral surface and a thrust end surface that cooperates with the thrust bottom surface. Along with being established,
In a hydrodynamic gas bearing in which a thrust bearing member having the thrust bottom surface is fixed to an end of the cylindrical hole of the sleeve, a part of the outer circumference of the thrust bearing member has a diameter that matches the inner diameter of the cylindrical hole. The thrust bearing member is fixed to the sleeve by forming arcuate outer peripheral portions and fan-shaped notches intermittently in the circumferential direction, and fitting the arcuate outer peripheral portion into the cylindrical hole. A plurality of circumferential surfaces slightly spaced apart from the inner circumferential surface of the cylindrical hole and annular grooves formed by shallowly carving the circumferential surface are formed along the generatrix direction on the remaining outer periphery. A hydrodynamic gas bearing featuring: