US 12,305,700 B2
Thrust bearing device and turbocharger
Seigi Yano, Tokyo (JP); Takaya Futae, Tokyo (JP); and Shuichi Isayama, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 18/271,616
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Feb. 3, 2022, PCT No. PCT/JP2022/004154
§ 371(c)(1), (2) Date Jul. 10, 2023,
PCT Pub. No. WO2022/168897, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 2021-017245 (JP), filed on Feb. 5, 2021.
Prior Publication US 2024/0052880 A1, Feb. 15, 2024
Int. Cl. F16C 17/04 (2006.01); F16C 17/06 (2006.01)
CPC F16C 17/06 (2013.01) [F16C 2360/24 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A thrust bearing device, comprising:
a thrust collar fitted with a drive shaft, the thrust collar including a flange portion extending radially outward of the drive shaft; and
a thrust member penetrated by the thrust collar and including a pad portion in a region facing the flange portion,
wherein the pad portion includes:
a plurality of land portions which are parallel to a plane orthogonal an axis of the drive shaft and are disposed at intervals in a circumferential direction of the drive shaft; and
tapered portions each of which is disposed between adjacent land portions among the plurality of land portions, joined via a step to a boundary of one land portion in the circumferential direction of the drive shaft, and joined continuously to a boundary of another land portion,
wherein each of the land portions has a circumferential groove which is longer in the circumferential direction than in a radial direction of the drive shaft, and
wherein the circumferential groove communicates with one tapered portion and another tapered portion adjacent to the land portion.