Thrust foil bearing
AssigneeNtn Corporation
InventorsMasato Yoshino, Hiroki Fujiwara
Life of this patent
Estimating the term…
Abstract
A thrust foil bearing (20) includes a foil holder (21) and a plurality of foils (22). Each of the foils (22) includes: a top foil portion (22a); an extending portion (22b); and an underfoil portion (22c). The extending portion (22b) of the each of the foils (22) is arranged behind another of the foils (22) that is adjacent to the each of the foils (22) on the one circumferential side. The underfoil portion (22c) of the each of the foils (22) is arranged between the top foil portion (22a) of the another of the foils (22), which is adjacent to the each of the foils (22) on another circumferential side, and the end surface (21a) of the foil holder (21).
Claims6
A thrust foil bearing, comprising:
- a foil holder;
- and
- a plurality of foils fixed to an end surface of the foil holder so as to be arrayed in a circumferential direction of the thrust foil bearing, wherein
- the thrust foil bearing is configured to support a shaft, which is to be relatively rotated in one circumferential direction, in thrust directions,
- each of the foils comprises:
- a top foil portion having a bearing surface;
- an extending portion formed on one circumferential side of the top foil portion;
- and
- an underfoil portion formed on another circumferential side of the top foil portion,
- the extending portion of each of the foils is arranged at a side of an adjacent one of the foils on the one circumferential side that faces the end surface of the foil holder,
- the underfoil portion of each of the foils is arranged between the top foil portion of another adjacent one of the foils on the another circumferential side and the end surface of the foil holder.
Dependencies are inferred from the claim text.