JPH025614U

JPH025614U -

Info

Publication number: JPH025614U
Application number: JP8458888U
Authority: JP
Priority date: 1988-06-27
Filing date: 1988-06-27
Publication date: 1990-01-16
Anticipated expiration: 2003-06-27
Also published as: JPH0732978Y2

Description

[Brief explanation of drawings]

第１図はこの考案のスラスト動圧流体軸受の第
一実施例の側面図、第２図は第１図の平面図、第
３図は第１図の可動部材の―線矢視図、第４
，５図は変形例の側面図および平面図、第６，７
図は他の変形例の側面図および平面図、第８，９
図は他の変形例の側面図および平面図、第１０図
は変形例の縦断面図、第１１図は第１０図の可動
部材のXI―XI線矢視図、第１２図はこの考案のス
ラスト動圧流体軸受の第２実施例の側面図、第１
３図は変形例の縦断面図である。１，４１，５１，６１…固定部材、２，４２，
５２，６２…可動部材、５…グリース、６，２６
，３０…突起部、１３…押し戻し部材、７，１７
，２７…押し戻し面、５６，６６…凹部、５６ａ
，６６ａ…円筒面、５７，６７…ネジ。 FIG. 1 is a side view of the first embodiment of the thrust dynamic pressure fluid bearing of this invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a view of the movable member in FIG. 4
, 5 is a side view and a plan view of a modified example, and 6th and 7th figures are
The figures are side views and top views of other modified examples, Nos. 8 and 9.
The figures are a side view and a plan view of another modification, FIG. 10 is a longitudinal sectional view of the modification, FIG. 11 is a view taken along the line XI-XI of the movable member in FIG. 10, and FIG. Side view of the second embodiment of the thrust dynamic pressure fluid bearing, the first
FIG. 3 is a longitudinal sectional view of a modified example. 1, 41, 51, 61...fixing member, 2, 42,
52, 62...Movable member, 5...Grease, 6,26
, 30... Projection, 13... Push-back member, 7, 17
, 27... Push-back surface, 56, 66... Recessed portion, 56a
, 66a...Cylindrical surface, 57, 67...Screw.

Claims

[Claims for Utility Model Registration] (1) A thrust dynamic pressure fluid in which grease is filled between a movable member and a fixed member that face each other in the axial direction, and dynamic pressure is generated in the grease by rotation of the movable member. A thrust dynamic pressure fluid bearing, characterized in that the bearing comprises a push-back means for pushing back the grease discharged from between the movable member and the fixed member between the movable member and the fixed member as the movable member rotates. (2) In the thrust hydrodynamic bearing described in claim 1 of the utility model registration claim, the push-back means is provided on the fixed member,
A thrust dynamic pressure fluid bearing with a push-back surface inclined with respect to the radial direction. (3) The thrust dynamic pressure fluid bearing according to claim 2 of the utility model registration claim, wherein the push-back surface is inclined with respect to the axial direction of the fixing member. (4) In the thrust hydrodynamic bearing described in claim 1 of the utility model registration claim, the push-back means pushes the fixed member and the movable member toward each other so as to form a gap through which the discharged grease is guided. A thrust dynamic pressure fluid bearing is configured by forming opposing cylindrical surfaces and forming a spiral groove on one of the cylindrical surfaces.