US 12,031,597 B2
Brake disk unit for railway vehicle
Hiroshi Nogami, Tokyo (JP); Takahiro Fujimoto, Tokyo (JP); Yuiko Shiotani, Tokyo (JP); Ryuichi Nishimura, Tokyo (JP); Mitsuhiro Okamoto, Tokyo (JP); Kumpei Sano, Tokyo (JP); Naruo Miyabe, Tokyo (JP); and Yuki Ichikawa, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/753,535
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Sep. 9, 2020, PCT No. PCT/JP2020/034076
§ 371(c)(1), (2) Date Mar. 7, 2022,
PCT Pub. No. WO2021/065392, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-178274 (JP), filed on Sep. 30, 2019; and application No. 2020-072438 (JP), filed on Apr. 14, 2020.
Prior Publication US 2022/0333656 A1, Oct. 20, 2022
Int. Cl. F16D 65/12 (2006.01); B61H 5/00 (2006.01); F16D 65/847 (2006.01); F16D 65/02 (2006.01)
CPC F16D 65/128 (2013.01) [B61H 5/00 (2013.01); F16D 65/847 (2013.01); F16D 2065/1332 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A brake disk unit for a railway vehicle, comprising:
a rotating member mounted to an axle of the railway vehicle;
a brake disk including an annular disk main body having a rear surface facing the rotating member, a plurality of fins arranged in a radial shape on the rear surface, and a plurality of first convex portions and/or a plurality of first concave portions formed on a surface of the brake disk; and
a control member that includes a plate-shaped support portion interposed between the rotating member and the plurality of fins, and a projecting portion at least a part of which is arranged between fins that are adjacent in a circumferential direction of the brake disk among the plurality of fins, the projecting portion projecting from the support portion toward the disk main body, the control member controlling an airflow rate between the fins that are adjacent;
wherein:
a gap is formed between the projecting portion and the brake disk; and
on the surface of the brake disk, the first convex portions and/or the first concave portions are provided further on an outer side in a radial direction of the brake disk than a minimum opening portion that is a portion of the gap at which an area of a cross section along the circumferential direction is smallest.