Disc brake pad retention system and mounting method

Patent metadata

Field	Value
Publication number	US-2016273600-A1
Application number	US-201514664067-A
Country	US
Kind code	A1
Filing date	Mar 20, 2015
Priority date	Mar 20, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

An apparatus and method are provided for suppressing undesired brake pad motion during brake application, and for installing and removing brake pads utilizing the inventive arrangements. One embodiment of the invention includes brake pads and a carrier mount having complementary surface features that retain the brake pad when the brake pad is in its installed position and a brake pad biasing structure that biases the brake pad in the radially outward direction to bias contact faces of the mount horn and the brake pad against one another to suppress brake pad kick and vibration and related wear and component fatigue.

First claim

What is claimed is:

1 . A brake pad motion suppression system for a disc brake, comprising:
a brake caliper; a brake pad; a carrier mount having brake pad abutment surfaces configured to receive the brake pad; a brake pad biasing structure, wherein
a lateral side of the brake pad and a brake pad abutment surface of the carrier mount have complementary surface features configured to retain the brake pad in the disc brake in a radially outward direction,
the brake pad biasing structure biases a face of the surface feature of the brake pad in the radially outward direction against a face of the surface feature of the brake pad abutment surface.

2 . The brake pad motion suppression system of claim 1 , wherein
the brake pad biasing structure engages an upper portion of a backing plate of the brake pad.

3 . The brake pad motion suppression system of claim 2 , wherein
the brake pad biasing structure includes at least one spring configured to bias the brake pad in the radially outward direction.

4 . The brake pad motion suppression system of claim 3 , wherein
the brake pad biasing structure includes a spring support configured to support the at least one spring when the spring is applying a radially outward biasing force to the brake pad.

5 . The brake pad motion suppression system of claim 4 , wherein
the brake pad biasing structure includes a spring reaction bar supported on the brake caliper and supporting the at least one spring.

6 . The brake pad motion suppression system of claim 5 , wherein
the surface feature of the brake pad abutment surface is wedge-shaped.

7 . The brake pad motion suppression system of claim 5 , wherein
a radially outer surface of the upper portion of the brake pad backing plate includes at least one spring receiving feature configured to cooperate with the at least one spring to bias the brake pad in the radially outward direction.

8 . The brake pad motion suppression system of claim 7 , wherein
the at least one brake pad backing plate spring receiving feature is configured to receive an S-shaped tip of the at least one spring.

9 . The brake pad motion suppression system of claim 7 , wherein
the at least one brake pad backing plate spring receiving feature is configured to receive a tip of the at least one spring having a spring retaining feature configured to cooperate with a corresponding spring retaining feature of the at least one brake pad backing plate spring receiving feature.

10 . The brake pad motion suppression system of claim 9 , wherein
the spring retaining feature of the at least one brake pad backing plate spring receiving feature is a hook-shaped protrusion and the spring retaining feature of the tip of the at least one spring is a depression configured to cooperate with the hook-shaped protrusion to inhibit movement of the tip away from the at least one brake pad backing plate spring receiving feature.

11 . The brake pad motion suppression system of claim 7 , further comprising:
at least one spring insert configured to be located between the spring reaction bar and the at least one spring.

12 . The brake pad motion suppression system of claim 11 , wherein
at least one of the at least one spring insert and the spring reaction bar is configured increase the radially outward biasing force applied by the at least one spring to the brake.

13 . A method for installing a brake pad into a disc brake comprising a brake caliper, a brake pad, a carrier mount, a brake disk and a brake pad biasing structure, wherein the caliper is configured to straddle the carrier mount and the disk, the carrier mount has brake pad abutment surfaces configured to receive the brake pad, a lateral side of the brake pad and a brake pad abutment surface of the carrier mount have complementary surface features configured to retain the brake pad in the disc brake in a radially outward direction, comprising the acts of:
aligning the brake pad with at least one radially-oriented brake pad insertion feature of the carrier mount; moving the brake pad in a radially-inward direction until the complementary surface features of the brake pad and the brake pad abutment surface are aligned; moving the brake pad toward the brake disk to engage the complementary surface features of the brake pad and the brake pad abutment surface; locating the brake pad biasing structure on the brake caliper in a position in which the brake pad is biased in the radially outward direction such that a face of the surface feature of the brake pad is biased against a face of the surface feature of the brake pad abutment surface.

14 . The method of claim 13 , wherein
the act of locating the brake pad biasing structure on the brake caliper includes securing a spring reaction bar over the brake pad, supporting a least one spring on the spring reaction bar, and engaging the at least one spring with a spring receiving feature of an upper portion of a brake pad backing plate of the brake pad.

15 . The method of claim 14 , wherein
the surface feature of the brake pad abutment surface is wedge-shaped.

16 . The method of claim 15 , wherein
a radially outer surface of the upper portion of the brake pad backing plate includes at least one spring receiving feature configured to cooperate with the at least one spring to bias the brake pad in the radially outward direction, and the act of locating the brake pad biasing structure on the brake caliper includes engaging a tip of the at least one spring into the at least one spring receiving feature of the brake pad backing plate.

17 . The method of claim 16 , wherein
the at least one brake pad backing plate spring receiving feature is configured to receive an S-shaped tip of the at least one spring.

18 . The method of claim 16 , wherein
the at least one brake pad backing plate spring receiving feature is configured to receive a tip of the at least one spring having a spring retaining feature configured to cooperate with a corresponding spring retaining feature of the at least one brake pad backing plate spring receiving feature.

19 . The method of claim 18 , wherein
the spring retaining feature of the at least one brake pad backing plate spring receiving feature is a hook-shaped protrusion and the spring retaining feature of the tip of the at least one spring is a depression configured to cooperate with the hook-shaped protrusion to inhibit movement of the tip away from the at least one brake pad backing plate spring receiving feature.

20 . The method of claim 16 , wherein
the disc brake further includes at least one spring insert configured to be located between the spring reaction bar and the at least one spring.

21 . The method of claim 20 , wherein
the at least one spring insert is configured increase the radially outward biasing force applied by the at least one spring to the brake.

Assignees

• Bendix Spicer Foundation Brake

Inventors

• Radhakrishnan Harish
• Lantz Richard L
• Deng Kailin

Classifications

• F16D2250/0084

  Assembly or disassembly · CPC title

• F16D65/0977 Primary

  Springs made from sheet metal · CPC title

• F16D2065/026

  characterised by a particular outline shape of the braking member, e.g. footprint of friction lining · CPC title

• F16D55/225

  the braking members being brake pads · CPC title

• F16D65/092

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