JPS6418625U

JPS6418625U -

Info

Publication number: JPS6418625U
Application number: JP11307187U
Authority: JP
Priority date: 1987-07-23
Filing date: 1987-07-23
Publication date: 1989-01-30

Description

[Brief explanation of drawings]

第１図は本考案による動圧軸受の一部縦断面図
、第２図は第１図に示された軸受部材の平面図、
第３図は従来の動圧軸受の一部縦断面図、第４図
は第３図に示されたスラスト部材の平面図である
。１：軸体、１ｂ：外周面、２：スラスト部材、
２ａ：平面、３，５：溝、４：軸受部材、４ａ：
スラスト軸受面、４ｂ：ラジアル軸受面。 FIG. 1 is a partial vertical sectional view of a hydrodynamic bearing according to the present invention, FIG. 2 is a plan view of the bearing member shown in FIG. 1,
FIG. 3 is a partial longitudinal sectional view of a conventional dynamic pressure bearing, and FIG. 4 is a plan view of the thrust member shown in FIG. 3. 1: shaft body, 1b: outer peripheral surface, 2: thrust member,
2a: Plane, 3, 5: Groove, 4: Bearing member, 4a:
Thrust bearing surface, 4b: radial bearing surface.

Claims

[Scope of utility model registration request]

A shaft body having a thrust member integrally molded perpendicular to the axis, a thrust bearing surface facing one plane of the thrust member, and a radial bearing surface facing the outer peripheral surface of the shaft body. In a hydrodynamic bearing comprising a bearing member into which the shaft body is loosely fitted, gas is drawn between the outer circumferential surface of the shaft body and a radial bearing surface of the bearing member to generate pressure. A groove for generating dynamic pressure that brings the radial bearing surface into a non-contact state is provided on the outer peripheral surface of the shaft body,
A groove for generating dynamic pressure is provided on the thrust bearing surface of the bearing member to generate pressure by entraining gas between one plane of the thrust member and the thrust bearing surface of the bearing member, thereby causing the thrust member to float above the thrust bearing surface. A hydrodynamic bearing characterized by: