Disc brake for a commercial vehicle, brake pad, and brake pad set

Patent metadata

Field	Value
Publication number	US-11359684-B2
Application number	US-201816196498-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	May 20, 2016
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A disc brake for a commercial vehicle is provided. The disc brake includes a brake caliper, preferably in the form of a sliding caliper, straddling a brake disc, being arranged on a fixed backing plate, and having an application device for applying the brake. The disk brake also includes two brake pads, each having a pad carrier and an affixed friction pad, and each being inserted into a pad shaft of the backing plate. The brake caliper has a central caliper opening over the disc brake. A hold-down bar is provided, designed in such a way that, of the two brake pads, it radially secures only the reaction-side brake pad in its lining shaft in the backing plate. The hold-down bar is held on the brake caliper by its end facing away from the brake pad. Additionally, the application-side brake pad is radially interlockingly secured in its pad shaft in the backing plate. The application-side brake pad has a brake pad spring, which is held on the application-side brake pad and includes ends which rest resiliently on horns of the backing plate.

First claim

What is claimed is:

1. A disk brake for a vehicle, comprising:
a brake caliper which engages over a brake disk, the brake caliper being a sliding caliper, and is arranged on a positionally fixed brake carrier, the brake caliper including an application device for applying the disk brake; and
two brake pads which each have a pad carrier and a friction pad fastened to the pad carrier and of which one, as an application-side brake pad, is pressible by way of the application device against the brake disk on one side of the brake disk and of which the other, as a reaction-side brake pad, is arranged on the opposite side of the brake disk, the application-side brake pad being inserted into a pad slot of the brake carrier and the reaction-side brake pad being inserted onto another pad slot of the brake carrier or the brake caliper,
wherein
the brake caliper has a central caliper opening over the brake disk, through which caliper opening the two brake pads are insertable into the respective pad slot of the brake carrier,
a hold-down clip is provided which is configured to radially secure only the reaction-side brake pad in its pad slot in the brake carrier, wherein the hold-down clip is, with its end averted from the brake pad, held on the brake caliper, and
the application-side brake pad is secured radially in the brake carrier in its pad slot by way of a form fit.

2. The disk brake according to claim 1 , wherein the application-side brake pad has a pad spring which is secured on the application-side brake pad and which has ends which lie resiliently on brake carrier horns of the brake carrier.

3. The disk brake according to claim 1 , wherein the hold-down clip engages into the reaction-side brake pad.

4. The disk brake according to claim 1 , wherein the hold-down clip engages over the reaction-side brake pad entirely or partially axially parallel with respect to the brake disk.

5. The disk brake according to claim 1 , wherein the hold-down clip is, with its end averted from the reaction-side brake pad to be secured radially, held releasably on the brake caliper.

6. The disk brake according to claim 1 , wherein the hold-down clip is non-releasably fixed to a part of the reaction-side brake pad to be secured radially.

7. The disk brake according to claim 6 , wherein the hold-down clip is fixed to a cover and/or to a pad spring of the brake pad to be held down.

8. The disk brake according to claim 7 , wherein the pad spring entirely or partially extends through the cover.

9. The disk brake according to claim 7 , wherein
the pad spring is formed in one piece with the cover, or
the pad spring is cohesively connected to the cover.

10. The disk brake according to claim 7 , wherein the hold-down clip is connected to the cover with a form-fit.

11. The disk brake according to claim 1 , wherein the hold-down clip is releasably or non-releasably fastened to the brake caliper or is formed in one piece therewith.

12. The disk brake according to claim 1 , wherein the application-side brake pad is secured radially in the brake carrier by way of projections on the pad carrier, which projections engage into corresponding undercuts of the brake carrier.

13. The disk brake according to claim 1 , wherein the disk brake includes a brake carrier that comprises:
an attachment region for fixing to a vehicle axle; and
at least one pad slot for receiving and supporting at least the application-side brake pad,
wherein
the at least one pad slot is formed by an entry-side carrier horn, an exit-side carrier horn and a bridge which connects the entry-side carrier horn and the exit-side carrier horn,
regions of the bridge adjoining the carrier horns form bearing surfaces for radially supporting the application-side brake pad, and
respective guide contours on a side surface of the carrier horns are configured to guide the application-side brake pad into a sliding-in position to a side of the at least one pad slot, in which position the application-side brake pad is slidable, axially with respect to the vehicle axle, into the at least one pad slot between the carrier horns.

14. The disk brake according to claim 13 , wherein the bearing surfaces for radially supporting the application-side brake pad are laterally enlarged by a mounting region for limiting sliding movement of the brake pad into the sliding-in position to the side of the at least one pad slot.

15. The disk brake according to claim 13 , wherein the guide contours are integrally formed, as material thickening of the carrier horns, on side surfaces of the carrier horns.

16. The disk brake according to claim 13 , wherein the guide contours of the carrier horns of at least one pad slot are shaped so as to converge on one another toward the bridge.

17. The disk brake according to claim 13 , wherein the guide contours each have at least one rectilinear guide region.

18. The disk brake according to claim 17 , wherein
the at least one rectilinear guide region includes
a first rectilinear guide region is oriented at an angle with respect to a plane of an inner side of the carrier horns, and
a second rectilinear guide region lies in a plane of the inner side of the respective carrier horn.

19. The disk brake according to claim 18 , wherein, on respective inner sides of the carrier horns, there are integrally formed projections for radially securing the brake pad with a correspondingly shaped pad carrier plate with lateral recesses.

20. The disk brake according to claim 19 , wherein
below the projections, there is integrally formed in each case one receptacle for receiving a respective projection of the pad carrier plate, and
the guide contours end in each case at a side edge of the respective receptacle.

21. A method for mounting brake pads in a disk brake according to claim 1 , the method comprising the acts of:
inserting the reaction-side brake pad radially through the caliper opening of the brake caliper into its pad slot in the brake carrier, wherein the reaction-side brake pad is then radially secured there by way of a hold-down clip which is arranged on the brake caliper;
first inserting the application-side brake pad radially into the disk brake through the caliper opening of the brake caliper and then, by way of an axial movement, moving the application-side brake pad into a position in the pad slot, assigned thereto, of the brake carrier in which the application-side brake pad is secured there radially by way of a form fit between the application-side brake pad and the brake carrier; and
placing ends of a pad spring, which is secured on the application-side brake pad, onto brake carrier horns of the brake carrier so as to lie resiliently on the brake carrier horns of the brake carrier.

22. A brake pad set comprising:
a reaction-side brake pad; and
an application-side brake pad, wherein
the application-side brake pad is secured radially in a brake carrier by way of at least one form-fit element on a pad carrier and has a pad spring which is secured on the application-side brake pad,
the pad spring has ends which are designed to lie resiliently on brake carrier horns of an associated brake carrier, and
the reaction-side brake pad is designed for interacting with a hold-down clip, which is designed such that it radially secures only the reaction-side brake pad in its pad slot on a disk brake.

23. The brake pad set according to claim 22 , wherein the application-side brake pad is secured radially in th

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Fischl Tobias
• Pritz Wolfgang
• Petschke Andreas
• Schropp Josef
• Dahlenburg Julian Cato
• Bartel Markus

Classifications

• F16D65/097

  Resilient means interposed between pads and supporting members {or other brake parts} · CPC title

• F16D65/0974 Primary

  acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis · CPC title

• F16D55/226

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

• F16D65/0978

  acting on one pad only · CPC title

• F16D2250/0084

  Assembly or disassembly · CPC title