JPS5869117U

JPS5869117U - Hydrodynamic thrust bearing device

Info

Publication number: JPS5869117U
Application number: JP16371781U
Authority: JP
Inventors: 恭三郎古村; 保夫村上
Original assignee: 日本精工株式会社
Priority date: 1981-11-04
Filing date: 1981-11-04
Publication date: 1983-05-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来使用されている動圧スラスト軸受装置の要
部の断面図。第２図、第３図、第４図および第５図はこ
の考案による動圧スラスト軸受装置の実施例の要部の断
面図である。図中符号１は軸、２は軸受部材、３は支持部材、４は凸
起部、５１は連通孔、５２は循環孔、６は空隙、７は軸
端部材、８は案内みぞ、９はスリーブ、１０は動圧ラジ
アル軸受である。FIG. 1 is a sectional view of the main parts of a conventionally used hydrodynamic thrust bearing device. 2, 3, 4, and 5 are sectional views of essential parts of an embodiment of the dynamic pressure thrust bearing device according to this invention. In the figure, 1 is a shaft, 2 is a bearing member, 3 is a support member, 4 is a protrusion, 51 is a communication hole, 52 is a circulation hole, 6 is a gap, 7 is a shaft end member, 8 is a guide groove, 9 is a The sleeve 10 is a hydrodynamic radial bearing.

Claims

[Scope of utility model registration request]

(1) The center of either the end face of a shaft that has a flat surface or a curved surface close to a flat surface and whose outer peripheral surface is supported within the inner peripheral surface of a support member, or the bearing surface of a bearing member that faces and cooperates with the end face of the shaft. In the thrust bearing device, the thrust bearing device has a protrusion on the shaft, a dynamic pressure generating groove is provided on one or both of the opposing surfaces, and a lubricant is interposed between the outer circumferential surface on the end surface side of the shaft and the support member. A circulation hole having a gap reaching the bearing surface between the inner circumferential surface of the shaft and the inner circumferential surface of the shaft, and having a communication hole in the outer circumferential surface of the shaft that is centered on the axis of the shaft and located in the gap. A dynamic pressure thrust bearing device characterized by being provided with.

(2) Utility Model Registration Scope of Claim 1: The hydrodynamic thrust bearing device according to claim 1, wherein the shaft is formed by joining a separate shaft end member with a protrusion and a circulation hole.

(3) Scope of Utility Model Registration In either Paragraph 1 or Paragraph 2, a spiral shape in which lubricant is delivered to the bearing surface on the outer circumferential surface of the shaft in the gap or on the inner circumferential surface of the opposing support member. A hydrodynamic thrust bearing device with a guide groove.

(4) Scope of Utility Model Registration According to any of claims 1, 2, and 3, a spiral shape is formed on the inner circumferential surface of the support member at a position closer to the bearing surface than the communication hole of the void. A hydrodynamic thrust bearing device equipped with a sleeve with a guide groove.
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