Thrust foil bearing
AssigneeIHI Corporation
InventorsTsutomu Iida, Seiichiro Yoshinaga, Masahiro Nakajima, Shigekazu Aoyama, Naomichi Omori
Life of this patent
Estimating the term…
Abstract
A thrust foil bearing includes: a base plate including an insertion hole through which a shaft is inserted, and a supporting surface expanding in a direction orthogonal to an axial direction of the insertion hole; a step member placed on the supporting surface and formed of a different body from the base plate; and a back foil extending in a circumferential direction of the insertion hole and in which one part of the back foil is supported by the supporting surface and another part of the back foil next to the one part in the circumferential direction is supported by the step member.
Claims6
A thrust foil bearing comprising:
- a base plate including an insertion hole through which a shaft is inserted, and a supporting surface expanding in a direction orthogonal to an axial direction of the insertion hole;
- a step member placed on the supporting surface and formed of a different body from the base plate;
- and
- a back foil extending in a circumferential direction of the insertion hole and in which one part of the back foil is supported by the supporting surface and another part of the back foil next to the one part in the circumferential direction is supported by the step member, wherein
- the back foil includes a plurality of mountain parts and a plurality of valley parts that are alternately formed,
- the step member includes first surfaces having different heights in the axial direction, and a second surface connecting the first surfaces next to each other, and
- at least two valley parts of the plurality of valley parts are supported by the first surfaces.
A thrust foil bearing comprising:
- a base plate including an insertion hole through which a shaft is inserted, and a supporting surface expanding in a direction orthogonal to an axial direction of the insertion hole;
- a step member placed on the supporting surface and formed of a different body from the base plate;
- and
- a back foil extending in a circumferential direction of the insertion hole and in which one part of the back foil is supported by the supporting surface and another part of the back foil next to the one part in the circumferential direction is supported by the step member,
- wherein an annular member is attached to the base plate, and the step member is sandwiched between the base plate and the annular member.
Dependencies are inferred from the claim text.