Disc brake and brake pad for a disc brake

Patent metadata

Field	Value
Publication number	US-9476468-B2
Application number	US-201414227627-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Sep 28, 2011
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A disc brake for a commercial vehicle includes a brake caliper which takes the form of a sliding caliper and straddles a brake disc. In the caliper, brake pads are arranged on an actuation side and a reaction side, which pads can be pressed against both sides of the brake disc by an actuation device during braking. The reaction-side brake pad is supported on a rear-side wall of the brake caliper by a pad carrier plate carrying a friction pad, and a gap is formed in a non-operational position in a region facing an assembly opening of the brake caliper between the rear-side wall of the brake caliper and the reaction-side brake pad. The gap is wider than the adjacent region and the length of the gap corresponds at least to the length of the contact surface of the reaction-side wall on the pad carrier plate when braking is applied. The disc brake is disposed such that the gap is formed by at least one recess in the pad carrier plate. The recess is integrated into the planar rear side running parallel to the side carrying the friction pad. The recess runs at a distance from the edges of the pad carrier plate that delimit the longitudinal sides of the brake pad.

First claim

What is claimed is:

1. A disc brake for use with a brake disc, the disc brake comprising:
a sliding caliper configured to straddle the brake disc when in use; and
first and second brake pads, one of which is arranged in the caliper on a clamping side and another of which is arranged on a reaction side, the brake pads being pressable against the brake disc via a brake application device, wherein
the brake pad on the reaction side comprises a pad backing plate on one side of which is carried a friction pad material, the reaction-side brake pad being supported with the pad backing plate on a rear wall of the caliper,
between the rear-end wall of the caliper and the pad backing plate of the reaction-side brake pad, a gap is formed which, in a non-operational position of the disc brake, is wider in a region facing an assembly opening of the caliper through which the brake pad is inserted than in an adjoining region,
a length of the gap corresponds at least to a length of a portion of the rear-end wall that bears against the pad backing plate in a contact pressure position,
the wider portion of the gap is formed by a recess provided in a back side of the pad backing plate, which back side is otherwise arranged parallel to the side of the pad backing plate carrying the friction pad material,
the recess provided in the back side extends at a distance from edges of the pad backing plate that delimit longitudinal sides of the pad backing plate, and
a cross-sectional profile of the recess is adapted to a contact angle of the rear-end wall that changes via deformation of the caliper during application of the disc brake.

2. The disc brake according to claim 1 , wherein the gap is configured to increasingly expand in a direction toward the assembly opening of the caliper.

3. A brake pad for a sliding caliper disc brake, comprising:
a pad backing plate having a friction material side surface and a back-side surface, said side surfaces being arranged parallel to one another;
a friction pad material fastened to the friction material side surface of the pad backing plate; and
at least one recess arranged in the back side surface of the pad backing plate, said recess extending in a longitudinal direction of the pad backing plate, being arranged spaced from edges of the pad backing plate delimiting the longitudinal sides, and having a cross-sectional profile configured to adapt to a contact angle of a rear-end wall of a caliper of the sliding caliper disc brake that changes via caliper deformation during brake application.

4. The brake pad according to claim 3 , wherein the recess extends non-linearly.

5. The brake pad according to claim 3 , wherein the recess has at least one bend in a longitudinal extent.

6. The brake pad according to claim 3 , wherein the recess is arranged in an upper half of the pad backing plate.

7. The brake pad according to claim 3 , wherein the recess is configured to have sharp-edges.

8. The brake pad according to claim 3 , wherein the recess is configured to have flat transitions to adjoining regions of the back-side of the pad backing plate that are raised relative to the recess.

9. The brake pad according to claim 3 , wherein the recess is arranged in an insert, said insert being inserted into the back-side of the pad backing plate.

10. A brake pad for a sliding caliper disc brake, comprising:
a pad backing plate having a friction material side surface and a back-side surface, said side surfaces being arranged parallel to one another;
a friction pad material fastened to the friction material side surface of the pad backing plate; and
at least one recess arranged in the back side surface of the pad backing plate, said recess extending in a longitudinal direction of the pad backing plate and being arranged spaced from edges of the pad backing plate delimiting the longitudinal sides,
wherein a plurality of recesses are arranged in the back-side of the pad backing plate, and
a cross-sectional profile of the recess is adapted to a contact angle of the rear-end wall that changes via deformation of the caliper during application of the disc brake.

11. The brake padding according to claim 10 , wherein the plurality of recesses are arranged symmetrically relative to a radial axis of the brake pad.

12. The brake padding according to claim 10 , wherein the plurality of recesses are arranged asymmetrically relative to a radial axis of the brake pad.

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Schoenauer Manfred

Classifications

• F16D65/092 Primary

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

• F16D55/226

  in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title

• B60T1/065

  employing disc (B60T1/062 takes precedence) · CPC title

• F16D65/095

  Pivots or supporting members therefor · CPC title

• F16D2055/0016

  Brake calipers · CPC title