BRAKE DISC FOR RAILROAD VEHICLE

Title:

BRAKE DISC FOR RAILROAD VEHICLE

Document Type and Number:

WIPO Patent Application WO/2022/210474

Kind Code:

A1

Abstract:

This brake disc (100) comprises an annular disc body (10) and fins (20). The fins (20) are arranged radially on the back surface (12) of the disc body (10). At least some of the fins (20) have a bolt-hole (22) at the center portion in the radial direction of the disc body (10). The disc body (10) includes an inner circumferential part (15). The inner circumferential part (15) is disposed at the inner side in the radial direction as compared to the bolt-holes (22). The thickness of the inner circumferential part (15) decreases toward the inner side in the radial direction. Each of the fins (20) includes a top surface (21) and a protrusion part (25). The protrusion part (25) protrudes toward the inner side in the radial direction as compared to a virtual plane (S1). The virtual plane (S1) passes through an end (212) of the top surface (21) and an inner circumferential edge (123) of the back surface (12).

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Inventors:

NOGAMI HIROSHI (JP)
KATO TAKANORI (JP)
TAMURA KENJI (JP)
MIYABE NARUO (JP)
KANAMORI SEIJI (JP)
KITAZAWA YUZUKA (JP)
KAMIYA MASAHIRO (JP)

Application Number:

PCT/JP2022/014828

Publication Date:

October 06, 2022

Filing Date:

March 28, 2022

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)

International Classes:

B61H5/00; F16D65/12; F16D65/847

Domestic Patent References:

WO2014169196A1	2014-10-16
WO2014038621A1	2014-03-13
WO2010071169A1	2010-06-24

Foreign References:

EP0683331B1	1998-10-21
JPS521266B1	1977-01-13

Attorney, Agent or Firm:

ASCEND IP LAW FIRM (JP)

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