Disc brake with an adjusting system

• US 20050077126A1
• Filed: 07/14/2004
• Published: 04/14/2005
• Est. Priority Date: 01/14/2002
• Status: Active Grant

• Current Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Original Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Inventors: Baumgartner, Johann
• Granted Patent: US 7,240,773 B2
• Time in Patent Office: Days
• US Class Current: 188/218.XL
• CPC Class Codes: F16D 2055/002 assembled from a plurality of parts
• CPC Class Codes: F16D 2065/386 driven electrically
• CPC Class Codes: F16D 2121/14 Mechanical
• CPC Class Codes: F16D 2125/28 Cams; Levers with cams
• CPC Class Codes: F16D 2125/40 Screw-and-nut
• CPC Class Codes: F16D 2125/48 with parallel stationary axes, e.g. spur gears
• CPC Class Codes: F16D 65/183 with force-transmitting members arranged side by side acting on a spot type force-applying member
• CPC Class Codes: F16D 65/568 for synchronous adjustment of actuators arranged in parallel

Abstract

A disc brake, particularly for commercial vehicles, is provided having a caliper reaching over a brake disc, a brake application device arranged in the caliper for applying the brake, as well as an adjusting system arranged in the caliper for compensating brake pad and/or disc wear by adjusting the distance between the brake pad and the brake disc. The caliper has a two-part construction including an application-side caliper part and a reaction-side caliper part. The reaction-side caliper part is designed such that it frames the brake disc in its upper circumferential area. The adjusting system has at least one or more adjusting devices also arranged on the reaction side of the brake disc, and preferably on each side of the brake disc.

Claims

1-19. -19. (canceled)

20. A disc brake for a commercial vehicle having a brake disc, the disc brake comprising:

a caliper configured to straddle the brake disc in an upper circumferential area thereof, the caliper having a two-part construction including an application-side caliper part and a reaction-side caliper part;

a brake application device arranged in the application-side caliper part for applying a braking force; and

an adjusting system for compensating at least one of brake pad wear and brake disc wear by adjusting a distance between the brake pad and the brake disc, the adjusting system having at least one or more adjusting devices arranged in the reaction-side caliper part.

21. The disc brake according to claim 20, wherein said at least one or more adjusting devices are arranged in the caliper on each side of the brake disc.

22. The disc brake, according to claim 20, wherein the reaction-side caliper part accommodates two brake pads, one on each side of the brake disc.

23. The disc brake according to claim 20, wherein the reaction-side caliper part accommodates the at least one reaction-side adjusting device in a recess.

24. The disc brake according to claim 21, wherein the reaction-side caliper part accommodates the at least one reaction-side adjusting device in a recess.

25. The disc brake according to claim 20, wherein the reaction-side caliper part is operatively fastenable via extensions with one or more bolts directly to one of an axle flange and a brake anchor plate.

26. The disc brake according to claim 20, wherein a reaction force generated on the side of the brake disc facing away from the brake application device occurs by at least one of:

a) displacing the caliper,

b) swivelling the caliper, and

c) displacing the brake disc,

wherein as a result of the at least one of the displacing and swivelling movement, essentially only half of the power stroke path or the whole power stroke path is bridgeable.

27. The disc brake according to claim 21, wherein a reaction force generated on the side of the brake disc facing away from the brake application device occurs by at least one of:

a) displacing the caliper,

b) swivelling the caliper, and

c) displacing the brake disc,

wherein as a result of the at least one of the displacing and swivelling movement, essentially only half of the power stroke path or the whole power stroke path is bridgeable.

28. The disc brake according to claim 20, wherein a reaction force generated on the side of the brake disc facing away from the brake application device side occurs by an elastic deforming of at least one of the caliper, the brake disc, and another element arranged between the caliper and an axle flange.

29. The disc brake according to claim 21, wherein a reaction force generated on the side of the brake disc facing away from the brake application device side occurs by an elastic deforming of at least one of the caliper, the brake disc, and another element arranged between the caliper and an axle flange.

30. The disc brake according to claim 20, wherein the brake disc is a sliding disc displaceably guided on a brake disc hub such that, as a result of a displacement, a sliding path can be implemented which is essentially limited to half the power stroke or the whole power stroke.

31. The disc brake according to claim 21, wherein the brake disc is a sliding disc displaceably guided on a brake disc hub such that, as a result of a displacement, a sliding path can be implemented which is essentially limited to half the power stroke or the whole power stroke.

32. The disc brake according to claim 20, wherein the caliper is a sliding caliper, which:

has a sliding caliper bearing,

is fastenable directly to an axle flange, and

is dimensioned such that a sliding path can be bridged which is limited to half the power stroke or the whole power stroke.

33. The disc brake according to claim 21, wherein the caliper is a sliding caliper, which:

has a sliding caliper bearing,

is fastenable directly to an axle flange, and

is dimensioned such that a sliding path can be bridged which is limited to half the power stroke or the whole power stroke.

34. The disc brake according to claim 20, wherein the caliper is a hinged caliper, which:

has a hinged-caliper bearing,

is fastenable directly to an axle flange, and

by which, a swivelling angle can be bridged which displaces the caliper relative to the brake disc essentially by the amount of half the power stroke or the whole power stroke.

35. The disc brake according to claim 21, wherein the caliper is a hinged caliper, which:

has a hinged-caliper bearing,

is fastenable directly to an axle flange, and

by which, a swivelling angle can be bridged which displaces the caliper relative to the brake disc essentially by the amount of half the power stroke or the whole power stroke.

36. The disc brake according to claim 20, wherein the brake application device has a rotary lever, which is eccentrically disposed at the caliper and which is supported by way of ball elements at an interior of the application-side caliper part, the rotary lever having additional ball elements also on its side facing away from the caliper, which additional ball elements comprise two mutually parallel screw arrangements at whose ends facing the brake disc, pressure pieces are in each case arranged which act upon an application-side brake pad.

37. The disc brake according to claim 21, wherein the adjusting device on one and/or both sides of the brake disc have screw arrangements that are changeable in their length perpendicular to the brake disc and each comprise a bolt and a sleeve screwed thereon.

38. The disc brake according to claim 20, wherein the adjusting system, also on one or both sides of the brake disc, has an adjuster drive, which is constructed as one of an electric motor and a mechanical coupling to the brake application device.

39. The disc brake according to claim 21, wherein the adjusting devices are rotary drives mutually coupled on both sides of the brake disc by a synchronization device.

40. The disc brake according to claim 39, wherein the synchronization device is one of a coupling mechanism or an electronic coupling system.

41. The disc brake according to claim 20, wherein the adjusting system on one or both sides of the brake disc is constructed as an adjuster module capable of preassembly.

42. The disc brake according to claim 20, wherein the adjusting system on one or both sides of the brake disc is constructed as an adjuster module capable of preassembly.

43. A disc brake for a commercial vehicle having a brake disc, the disc brake comprising:

a caliper having an application-side and a reaction-side, wherein the reaction-side straddles the brake disc in an upper circumferential area thereof;

an adjusting system having at least one adjusting device arranged in the reaction-side of the caliper on a reaction side of the brake disc; and

a brake application device arranged in the application-side of the caliper, the brake application device having at least one ball screw.

44. The disc brake according to claim 43, wherein the brake application device includes a rotary lever arranged on an exterior side of the caliper that acts upon a shaft penetrating the caliper, the shaft having an integrated adjusting device.

45. The disc brake according to claim 44, wherein the shaft carries a gearwheel which meshes with teeth on both sides which are arranged at an outer circumference of threaded nuts into which threaded spindles are screwed, which spindles are part of two mutually parallel ball screws aligned perpendicular to the brake disc, the threaded nuts being disposed via bearings on an interior of the caliper.

46. The disc brake according to claim 43, wherein for the ball screws of the brake application device, a profile between a threaded nut and a threaded spindle is in each case constructed as a saw-tooth profile on which balls run.

47. The disc brake according to claim 45, wherein for the ball screws of the brake application device, a profile between a threaded nut and a threaded spindle is in each case constructed as a saw-tooth profile on which balls run.

48. The disc brake according to claim 43, wherein the reaction-side and the application-side of the caliper are formed of separate parts.

49. The disc brake according to claim 43, wherein the reaction-side and the application-side of the caliper are formed in one piece.