JPH0194618U

JPH0194618U -

Info

Publication number: JPH0194618U
Application number: JP19067387U
Authority: JP
Priority date: 1987-12-17
Filing date: 1987-12-17
Publication date: 1989-06-22

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例に係るフオイルジヤ
ーナル軸受の組立断面図、第２図は第１図に装着
される帯状弾性フオイルの展開側面図、第３図は
第２図に示す帯状弾性フオイルを構成する一の弾
性片の断面図、第４図は同上弾性片の側面図、第
５図は第２図に示す帯状弾性フオイルを構成する
他の弾性片の平面図、第６図は第５図―線断
面図、第７図は従来のフオイルジヤーナル軸受の
組立断面図である。図中、１は軸孔、２は軸受ケース、３は弾性フ
オイル、４は回転軸、５は弾性片、６は円弧部、
９は楔状隙間である。 Fig. 1 is an assembled cross-sectional view of a foil journal bearing according to an embodiment of the present invention, Fig. 2 is an expanded side view of the band-shaped elastic foil installed in Fig. 1, and Fig. 3 is a band-shaped elastic foil shown in Fig. 2. 4 is a side view of the same elastic piece as above; FIG. 5 is a plan view of another elastic piece forming the band-shaped elastic foil shown in FIG. 2; and FIG. 5 is a sectional view taken along the line in FIG. 5, and FIG. 7 is an assembled sectional view of a conventional foil journal bearing. In the figure, 1 is a shaft hole, 2 is a bearing case, 3 is an elastic foil, 4 is a rotating shaft, 5 is an elastic piece, 6 is a circular arc portion,
9 is a wedge-shaped gap.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

円筒状の軸孔を有する軸受ケースの軸孔内に、
帯状の弾性フオイルを巻いて装着し、その装着さ
れた弾性フオイルの内周面内に嵌装されて回転す
る回転軸を、上記弾性フオイルとの間に生ずる楔
状隙間に導入される気流によつて浮き上げながら
支持するフオイルジヤーナル軸受において、上記
帯状の弾性フオイルを、同一形状をなす複数枚の
短冊状の弾性片を相互に長手方向にずらして積層
し、装着される弾性フオイルの内周面に、回転軸
の外周面との間で複数の楔状隙間を形成するため
の多円弧部を形成したことを特徴とするフオイル
ジヤーナル軸受。 Inside the shaft hole of the bearing case, which has a cylindrical shaft hole,
A band-shaped elastic foil is wound and attached, and a rotating shaft that is fitted into the inner peripheral surface of the attached elastic foil is rotated by an air flow introduced into a wedge-shaped gap created between the elastic foil and the elastic foil. In a foil journal bearing that is supported while floating, the band-shaped elastic foil is stacked with a plurality of strip-shaped elastic pieces of the same shape that are shifted from each other in the longitudinal direction, and the inner circumferential surface of the elastic foil is mounted. A foil journal bearing characterized in that a multi-arc portion is formed to form a plurality of wedge-shaped gaps between the bearing and the outer circumferential surface of the rotating shaft.