Disc brake for a commercial vehicle

Patent metadata

Field	Value
Publication number	US-10378602-B2
Application number	US-201715581273-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Oct 30, 2014
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A disc brake for a commercial vehicle has a brake caliper spanning a brake disc on the vehicle side, in which brake caliper a clamping device is arranged which has a pivotable brake lever engaging in at least one bridge carrying a brake plunger, which at the same time is directly or indirectly supported at the inner side of a wall of the brake caliper. The contact area of the bridge at the brake lever or of the brake lever at the brake caliper is configured as a pivot bearing having a bearing shell cross-sectionally configured as an arc forming a part of the pivot bearing. The bearing shell is placed in a seating. The disc brake is configured such that the bearing shell is located in the pivoting direction of the brake lever with its opposite longitudinal borders at stop edges, which longitudinally limit the trough-shaped seating.

First claim

What is claimed is:

1. A disc brake for a commercial vehicle, comprising:
a brake caliper engageable over a brake disc;
a clamping device arranged in the brake caliper, the clamping device comprising a pivotable brake lever that acts on a bridge supporting at least one brake plunger,
wherein
the brake lever directly or indirectly supports itself on an inside wall of the brake caliper,
a contact region of: (i) the bridge on the brake lever or (ii) the brake lever on the brake caliper, is formed as a pivot bearing,
the pivot bearing comprising a bearing shell configured as a circle-shaped arc in cross-section,
a seating in which the bearing shell is arranged,
the bearing shell is locked in a pivoting direction of the brake lever by longitudinal edges of the bearing shell located opposite one another, the longitudinal edges engaging longitudinal stop edges of the seating which delimiting a trough-shape of the seating such that the bearing shell is blocked against movement in the pivoting direction by the longitudinal stop edge.

2. The disc brake as claimed in claim 1 , wherein the stop edges are formed as slots.

3. The disc brake as claimed in claim 2 , wherein the slots located opposite one another have stop surfaces that are parallel to one another.

4. The disc brake as claimed in claim 1 , wherein the stop edges are formed as lugs and/or grooves.

5. The disc brake as claimed in claim 4 , wherein the longitudinal edges of the bearing shell are formed as angled legs which lie in slots or the grooves.

6. The disc brake as claimed in claim 4 , wherein end regions of the seating and of the bearing shell facing the grooves run tangentially.

7. The disc brake as claimed in claim 4 , wherein a clear distance of the lugs to one another is smaller than an outer distance of the associated longitudinal edges of the bearing shell to one another.

8. The disc brake as claimed in claim 4 , wherein the grooves are of angular or round design in cross section.

9. The disc brake as claimed in claim 4 , wherein the grooves, following the inserting of the bearing shell, are formed by crimping or flanging.

10. The disc brake as claimed in claim 4 , wherein the bearing shell is clipped into the grooves.

11. The disc brake as claimed in claim 1 , wherein the bearing shell is held in the seating by an abutting roller or sliding edge.

12. The disc brake as claimed in claim 1 , wherein the bearing shell comprises two shell-shaped portions.

13. The disc brake as claimed in claim 11 , wherein on the roller a locking ring is guided, which engages in a recess provided in the trough-shaped seating of the brake lever and extending in the pivot direction of the brake lever.

14. The disc brake as claimed in claim 13 , wherein a curvature radius of the recess corresponds to an outer radius of the locking ring.

15. A pivotable brake lever bearing arrangement for a commercial vehicle disc brake, comprising:
a pivotable brake lever configured to pivot about a rotational axis during actuation of the disc brake;
a pivot bearing encompassing the rotational axis, wherein the pivot bearing comprises a bearing seating and a bearing shell arranged in the bearing seating,
the bearing seating having a trough-shape extending in a longitudinal direction of the bearing seating,
the bearing shell is cross-sectionally configured as a circle-shaped arc,
the bearing seating has oppositely located stop edges, and
the bearing shell is locked by the stop edges against movement in a pivoting direction of the brake lever via longitudinal edges of the bearing shell located opposite one another that engage the stop edges.

16. The pivotable brake lever bearing arrangement according to claim 15 , wherein the stop edges are configured as slots.

17. The pivotable brake lever bearing arrangement according to claim 16 , wherein the slots located opposite one another have stop surfaces arranged parallel to one another.

18. The pivotable brake lever bearing arrangement according to claim 15 , wherein the stop edges are formed as grooves.

19. The pivotable brake lever bearing arrangement according to claim 15 , wherein the stop edges are projecting lugs.

20. The pivotable brake lever bearing arrangement according to claim 19 , wherein a clear distance of the projecting lugs to one another is less than an outer distance of the associated longitudinal edges of the bearing shell to one another.

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Adamczyk Philipp
• Scheufler Christian
• Klingner Matthias

Classifications

• F16D2125/32

  acting on one cam follower · CPC title

• F16D2121/14

  Mechanical · CPC title

• F16D2121/04

  acting on a piston-type actuator, e.g. for liquid pressure · CPC title

• F16D65/183 Primary

  with force-transmitting members arranged side by side acting on a spot type force-applying member · CPC title

• F16D65/18 Primary

  adapted for drawing members together {, e.g. for disc brakes} · CPC title