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

Patent metadata

Field	Value
Publication number	US-11434964-B2
Application number	US-201616064478-A
Country	US
Kind code	B2
Filing date	Dec 21, 2016
Priority date	Dec 28, 2015
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

This brake lining includes: a plurality of friction members which are arranged to be spaced from each other, each of the friction members having a front surface that is to face a sliding surface of a brake disk; a back board fastened to a back surface of each of the friction members; a base plate that supports each of the friction members at a region including a center portion of each friction member; and an elastic member disposed between the base plate and the back board, on a back surface side of each friction member. Two friction members that are adjacent to each other are taken as a pair, and the back board is fastened to each of the pairs of friction members. In each pair of friction members, the two friction members are arranged along the circumferential direction of the brake disk.

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 members arranged to be spaced from each other, each of the friction members having a front surface that is to face the sliding surface of the brake disk;
a back board fastened to a back surface of each of the friction members;
a base plate supporting each of the friction members at a region including a center portion of each of the friction members; and
an elastic member disposed between the base plate and the back board, on a back surface side of each of the friction members;
wherein:
two of the plurality of friction members that are adjacent to each other are taken as at least one pair, and the back board that is fastened to the at least one pair of friction members is a one-piece member;
in each of the at least one pair of friction members, the two friction members are arranged along a circumferential direction of the brake disk; and
each friction member is fastened to the base plate by a fastening member, and a direction of a line extending between two of the fastening members in the at least one pair of friction members extends along the circumferential direction of the brake disk,
wherein in a plan view of the base plate, none of the friction members are disposed on a radial line extending in a radial direction of the brake disk, the radial line extending throughout the base plate and positioned at a middle portion of the base plate with respect to a direction along the circumferential direction of the brake disk; and further wherein, in a plan view,
an edge of a pressing region intersects at least one of the friction members, the pressing region being a region of the base plate on which a pressing pressure is applied by a brake caliper, and
one pair of the friction members including the friction member intersected by the edge are inclined at an inclination angle so that a proportion of a portion of the pair of the friction members that does not enter the pressing region is decreased in terms of area in comparison with the proportion where the inclination angle is zero, the inclination angle being an angle between a straight line that passes through a center of each of the one pair of friction members and a tangential line of a circle that centers on a center of the brake disk and passes through a middle point of the centers of the one pair of friction members, the tangential line passing through the middle point.

2. 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.

3. The brake lining according to claim 1 , wherein, in a plan view of the base plate, the back board is disposed on the radial line.

4. The brake lining according to claim 1 , wherein the back board includes a plurality of back boards, and at least one of the back boards is disposed on the radial line.

Assignees

• Nippon Steel & Sumitomo Metal Corp
• Fine Sinter Co Ltd
• Nippon Steel Corp

Inventors

• Fujimoto Takahiro
• Sakaguchi Atsushi
• Asabe Kazutaka
• Kawasaki Kazumichi
• Nakano Takeshi
• Okahira Tokitake
• Karino Yasushi
• Takami Hajime

Classifications

• F16D65/092

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

• F16D65/0006 Primary

  Noise or vibration control · CPC title

• B61H5/00

  Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes · CPC title

• F16D2200/0034

  non-metallic · CPC title

• F16D65/0972 Primary

  transmitting brake reaction force, e.g. elements interposed between torque support plate and pad · CPC title