Multiple-piston disc brake

Patent metadata

Field	Value
Publication number	US-9377064-B2
Application number	US-201314099332-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Jun 9, 2011
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A multiple-piston disc brake includes a brake caliper overlapping brake disc, at least two pressure pistons that are movably arranged in the brake caliper to apply a clamping force to at least one brake pad in the direction of the brake disc, a pressure plate that is coupled to the at least two pressure pistons, and a clamping unit that has a pressure tube and an adjustment device, abridge and a lever. Each of the at least two pressure pistons is mounted in an axially movable manner in a pressure piston guide securely connected to the brake caliper.

First claim

What is claimed is:

1. A multiple-piston disc brake having a brake disc, comprising:
a caliper configured to straddle the brake disc;
at least two pressure pistons, which are arranged movably in the caliper to apply an application force to at least one brake pad in the direction of the brake disc;
a pressure plate, which is pivotably coupled to the at least two pressure pistons;
an application unit, which has a pressure tube and includes an adjustment device, a bridge and a lever;
wherein
each of the at least two pressure pistons is mounted in an axially movable manner in a pressure piston guide securely connected to the brake caliper,
the pressure plate is arranged between the at least two pressure pistons and the application unit.

2. The multiple-piston disc brake according to claim 1 , further comprising:
a bottom plate in which is arranged each of the pressure piston guides.

3. The multiple-piston disc brake according to claim 2 , wherein the pressure piston guides are formed integrally with the bottom plate.

4. The multiple-piston disc brake according to claim 3 , wherein each pressure piston guide has a sealing device that interacts with an associated pressure piston.

5. The multiple-piston disc brake according to claim 4 , wherein the sealing device of each pressure piston guide comprises at least one stripper element and at least one seal element.

6. The multiple-piston disc brake according to claim 5 , wherein:
the at least one stripper element is arranged on a side of the bottom plate facing the brake pad, and
the at least one seal element is arranged on a side of the bottom plate facing away from the brake pad.

7. The multiple-piston disc brake according to claim 6 , wherein the disc brake is configured such that the at least one seal element is reachable and exchangeable from the side of the bottom plate facing away from the brake pad.

8. A multiple-piston disc brake having a brake disc, comprising:
a caliper configured to straddle the brake disc;
at least two pressure pistons, which are arranged movably in the caliper to apply an application force to at least one brake pad in the direction of the brake disc;
a pressure plate, which is coupled to the at least two pressure pistons;
an application unit, which has a pressure tube and includes an adjustment device, a bridge and a lever;
wherein
each of the at least two pressure pistons is mounted in an axially movable manner in a pressure piston guide securely connected to the brake caliper,
the pressure plate is arranged between the at least two pressure pistons and the application unit, and
each of the at least two pressure pistons is coupled to the pressure plate via a pressure joint, the pressure joints being pivotable about an axis perpendicular to a direction of the application force and to an axis of rotation of the brake disc.

9. The multiple-piston disc brake according to claim 1 , wherein the pressure plate is a machine forged or cast part.

10. The multiple-piston disc brake according to claim 9 , wherein the lever is a machine forged or cast part.

11. The multiple-piston disc brake according to claim 1 , wherein the lever is a machine forged or cast part.

12. The multiple-piston disc brake according to claim 1 , wherein the adjustment device is arranged in the caliper such that the adjustment device is reachable and exchangeable from an exterior of the caliper.

13. A brake system for a vehicle, comprising:
a multiple-piston disc brake comprising:
a brake disc;
a caliper configured to straddle the brake disc;
at least two pressure pistons, which are arranged movably in the caliper to apply an application force to at least one brake pad in the direction of the brake disc;
a pressure plate, which is pivotably coupled to the at least two pressure pistons;
an application unit, which has a pressure tube and includes an adjustment device, a bridge and a lever;
wherein
each of the at least two pressure pistons is mounted in an axially movable manner in a pressure piston guide securely connected to the brake caliper,
the pressure plate is arranged between the at least two pressure pistons and the application unit.

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Pritz Wolfgang

Classifications

• F16D55/2255 Primary

  in which the common actuating member is pivoted · CPC title

• F16D2125/28

  Cams; Levers with cams · CPC title

• F16D55/226 Primary

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

• F16D2250/0084

  Assembly or disassembly · CPC title

• F16D65/183

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