Brake systems having back plates with thermal management features

Patent metadata

Field	Value
Publication number	US-11686358-B2
Application number	US-202117512986-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Mar 19, 2021
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A vehicle brake system is provided that includes (or is formed from) a back plate configured to support a composite pad, at least one conditioning insert coupled to the back plate and configured to contact a surface of a wheel during a braking event and thereby to condition at least a portion of the surface of the wheel, and fins coupled with the at least one conditioning insert and configured to conduct heat generated by contact of the at least one conditioning insert with the at least the portion of the surface of the wheel away from the at least one conditioning insert.

First claim

What is claimed is:

1. A vehicle brake system, comprising:
a back plate extending in a length direction from a first end to an opposite, second end, the back plate having a head surface configured to engage a brake head and a pad surface that is opposite the head surface, the pad surface of the back plate coupled with a composite pad;
first and second conditioning inserts coupled to the back plate between the first end and the second end of the back plate, the first and second conditioning inserts configured to contact a surface of a wheel during a braking event and thereby condition at least a portion of the surface of the wheel;
first fins coupled with the first conditioning insert and longitudinally extending along the length direction beyond the first end of the back plate; and
second fins coupled with the second conditioning insert and longitudinally extending along the length direction beyond the second end of the back plate, portions of the composite pad disposed between the first fins and between the second fins outside of the first and second conditioning inserts, the first fins and the second fins configured to conduct heat generated by contact of the first and second conditioning inserts with the at least the portion of the surface of the wheel away from the first and second conditioning inserts.

2. The vehicle brake system of claim 1 , wherein first fins and the second fins are planar bodies oriented parallel to the length direction of the back plate.

3. The vehicle brake system of claim 2 , wherein the first fins and the second fins are partially but not entirely embedded within the composite pad.

4. The vehicle brake system of claim 1 , wherein the first fins longitudinally and outwardly extend from the first conditioning insert to first outer edges of the first fins, the second fins longitudinally and outwardly extend from the second conditioning insert to second outer edges of the second fins, and the first fins and the second fins radially extend toward the surface of the wheel from radially outward edges to radially inward edges, the first fins and the second fins including respective notches at the radially outward edges.

5. The vehicle brake system of claim 1 , further comprising:
first and second head plates coupled with the back plate at the first end and the second end of the back plate, the first head plate longitudinally extending beyond the first end of the back plate along the length direction, the second head plate longitudinally extending beyond the second end of the back plate along the length direction, the first fins coupled with and disposed beneath the first head plate, and the second fins coupled with and disposed beneath the second head plate.

6. The vehicle brake system of claim 1 , wherein the first fins and the second fins extend above the head surface of the back plate in radial directions oriented away from the surface of the wheel.

7. A vehicle brake system, comprising:
a back plate configured to support a composite pad, the back plate extending along a length direction from a first end to an opposite second end, the back plate extending along an orthogonal direction from a first lateral edge to an opposite second lateral edge;
at least one conditioning insert coupled to the back plate and configured to contact a surface of a wheel during a braking event and thereby to condition at least a portion of the surface of the wheel; and
fins coupled with the at least one conditioning insert and longitudinally extending along the length direction beyond one or more of the first or the second end, one or more portions of the composite pad disposed between the fins, the fins configured to conduct heat generated by contact of the at least one conditioning insert with the at least the portion of the surface of the wheel away from the at least one conditioning insert.

8. The vehicle brake system of claim 7 , wherein the fins include planar bodies oriented parallel to the length direction of the back plate.

9. The vehicle brake system of claim 7 , wherein the fins are partially but not entirely embedded within the composite pad.

10. The vehicle brake system of claim 7 , further comprising at least one head plate coupled with the back plate at one or more of the first end or the second end of the back plate, the at least one head plate longitudinally extending beyond the one or more of the first end or the second end of the back plate along the length direction, the fins coupled with and disposed beneath the at least one head plate.

11. A method comprising:
forming or obtaining a back plate configured to support a composite pad, the back plate formed to extend in a length direction from a first end to a second end and along an orthogonal direction from a first lateral side edge to a second lateral side edge, the back plate formed to have a head surface configured to engage a brake head and a pad surface that is opposite the head surface;
forming or obtaining first and second conditioning inserts coupled to the back plate in a position to contact a surface of a wheel during a braking event and thereby to condition at least a portion of the surface of the wheel, the first conditioning insert formed or obtained to include first fins coupled with the first conditioning insert and longitudinally extending along the length direction beyond the first end of the back plate, the second conditioning insert formed or obtained to include second fins coupled with the second conditioning insert and longitudinally extending along the length direction beyond the second end of the back plate, the first fins and the second fins formed or placed in positions to conduct heat generated by contact of the first conditioning insert and the second conditioning insert with the at least the portion of the surface of the wheel away from the first conditioning insert and the second conditioning insert; and
forming a composite pad to be coupled with the pad surface of the back plate, the composite pad extending between the first conditioning insert and the second conditioning insert with portions of the composite pad disposed between the first fins and between the second fins.

12. The method of claim 11 , wherein the first fins and the second fins are formed to include planar bodies oriented parallel to the length direction of the back plate.

13. The method of claim 11 , further comprising forming the composite pad such that the first fins and the second fins are (a) partially but not entirely embedded within the composite pad or (b) entirely outside of the composite pad.

14. The method of claim 11 , wherein the first conditioning insert is formed or obtained to include a first head plate and the second conditioning insert is formed or obtained to include a second head plate with the first head plate longitudinally extending beyond the first end of the back plate along the length direction and the second head plate longitudinally extending beyond the second end of the back plate along the length direction, the first fins formed to be coupled with and disposed beneath the first head plate, and the second fins formed to be coupled with and disposed beneath the second head plate.

Assignees

• Westinghouse Air Brake Tech Corp

Inventors

• Bowden A Gary
• Sugg James Wesley
• Jarusinski Matthew P

Classifications

• F16D65/0037 Primary

  Devices for conditioning friction surfaces, e.g. cleaning or abrasive elements · CPC title

• F16D65/062

  engaging the tread of a railway wheel · CPC title

• F16D2065/789

  External cooling ribs · CPC title

• F16D65/807

  with open cooling system, e.g. cooled by air · CPC title