Brake lining for a railway vehicle and disc brake equipped with the same

Patent metadata

Field	Value
Publication number	US-10670094-B2
Application number	US-201615768563-A
Country	US
Kind code	B2
Filing date	Oct 19, 2016
Priority date	Oct 21, 2015
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A brake lining includes friction structures, back boards fastened to respective the friction structures, a base plate supporting the friction structures. Each of the friction structures includes two adjacent friction portions with a groove formed in the front surface in between, and a thin portion with a smaller thickness than thicknesses of the friction portions, the thin portion located in a position corresponding to the groove. Each of the friction structures is supported by the base plate on two support points located in the two friction portions respectively. The thin portion has a constant length, the length being equal to a maximum width of the friction portions and satisfying a condition that L/D is equal to or greater than 1.1, where D denotes the length of the thin portion and L denotes a distance between the two support points located in the friction portions.

First claim

The invention claimed is:

1. A brake lining configured to be pressed against a sliding surface of a brake disk fastened to a wheel or an axle of a railway vehicle, the brake lining comprising:
a plurality of friction structures of which front surfaces are to face the sliding surface of the brake disk;
back boards fastened to respective back surfaces of the friction structures;
a base plate supporting the friction structures; and
elastic members located behind the respective friction structures, between the base plate and the respective back boards; wherein:
each of the friction structures includes two adjacent friction portions with a groove formed in the front surface in between, and a thin portion with a smaller thickness than thicknesses of the friction portions, the thin portion located in a position corresponding to the groove;
in a planar view, one of the two adjacent friction portions in each of the friction structures has a straight side opposing to the other of the two adjacent friction portions;
each of the friction structures is supported by the base plate on two support points located in the two friction portions respectively;
in a planar view, each of the back boards has a contour overlapping a contour of the friction structure which the back board is fastened to; and
the thin portion has a constant length in a width direction of the friction portions, the length being equal to a maximum width of the friction portions and satisfying a condition that L/D is equal to or greater than 1.1, where D denotes the length of the thin portion and L denotes a distance between the two support points located in the friction portions.

2. The brake lining according to claim 1 , wherein the thin portion is rectangular in planar shape.

3. A disk brake comprising:
a brake disk fastened to a wheel or an axle of a railway vehicle; and
the brake lining according to claim 1 to be pressed against a sliding surface of the brake disk.

4. A disk brake comprising:
a brake disk fastened to a wheel or an axle of a railway vehicle; and
the brake lining according to claim 2 to be pressed against a sliding surface of the brake disk.

5. The brake lining according to claim 1 , wherein each friction structure is a monolithic member.

6. The brake lining according to claim 1 , wherein each friction structure and the back board fastened to the friction structure deform integrally.

7. A disk brake comprising:
a brake disk fastened to a wheel or an axle of a railway vehicle; and
the brake lining according to claim 5 to be pressed against a sliding surface of the brake disk.

8. A disk brake comprising:
a brake disk fastened to a wheel or an axle of a railway vehicle; and
the brake lining according to claim 6 to be pressed against a sliding surface of the brake disk.

Assignees

• Nippon Steel & Sumitomo Metal Corp
• Tokai Ryokaku Tetsudo Kk
• Nippon Steel Corp

Inventors

• Fujimoto Takahiro
• Sakaguchi Atsushi
• Miyabe Naruo
• Otsuka Tomohiro
• Kanamori Seiji
• Asano Jun

Classifications

• F16D2069/004

  Profiled friction surfaces, e.g. grooves, dimples · CPC title

• F16D2069/0433

  Connecting elements not integral with the braking member, e.g. bolts, rivets · CPC title

• F16D65/0971

  transmitting brake actuation force, e.g. elements interposed between brake piston and pad · CPC title

• F16D65/0006

  Noise or vibration control · CPC title

• F16D65/092

  for axially-engaging brakes, e.g. disc brakes · CPC title