Brake Application Mechanism of a Disc Brake

Abstract

Disclosed is a brake application mechanism for a disc brake in a utility vehicle, having a pivotable brake lever that is supported on an inner wall of a brake caliper and, indirectly, on a bridge which is movably disposed in the brake caliper and which supports at least one brake pad, wherefor an axially and radially secured antifriction roller is disposed between the brake lever and the bridge. The disclosed brake application mechanism is designed such that the antifriction roller rests on the bridge in such a way as to be prevented from rotating and sliding.

Claims

1.-9. (canceled)

10. A brake-application device of a disk brake for a utility vehicle, comprising: a pivotable brake lever which is supported, for one part, on an inner wall of a brake caliper, and, for another part, indirectly on a bridge which is arranged displaceably in the brake caliper and which bears at least one brake plunger, for which purpose a roller bearing assembly which bears against the bridge so as to be secured against rotation and displacement is provided between the brake lever and the bridge, wherein the bridge and at least one roller of the roller bearing assembly are connected by at least one securing element.

11. The brake-application device of a disk brake as claimed in claim 10, wherein the securing element is held in the bridge and in the at least one roller in a positively locking and/or frictionally locking manner.

12. The brake-application device of a disk brake as claimed in claim 10, wherein the securing element comprises a clamping sleeve or a dowel pin, said clamping sleeve or said dowel pin being pressed into a bore in the bridge and in the at least one roller.

13. The brake-application device of a disk brake as claimed in claim 10, wherein the securing element comprises a sheet-metal part which is pressed into a respective groove of the bridge and of the at least one roller.

14. The brake-application device of a disk brake as claimed in claim 10, wherein two coaxially oriented rollers are provided which are arranged with a spacing to one another.

15. The brake-application device of a disk brake as claimed in claim 14, wherein each of the two rollers are pressed into an eyelet of the bridge.

16. The brake-application device of a disk brake as claimed in claim 15, wherein the eyelets are formed integrally on the bridge.

17. The brake-application device of a disk brake as claimed in claim 16, wherein the eyelets are positioned at the opposite ends of the two rollers.

18. The brake-application device of a disk brake as claimed in claim 15, wherein the eyelets are positioned at the opposite ends of the two rollers.

19. The brake-application device of a disk brake as claimed in claim 10, wherein the at least one roller and the bridge are preassembled as a structural unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 shows a cross section of the schematic construction of a disc brake provided with a brake-application device according to the prior art.

[0027] FIG. 2 shows a perspective view of a detail of the disc brake according to an embodiment of the invention.

[0028] FIG. 3 shows a section through the detail along line III-III in FIG. 2.

[0029] FIG. 4 shows a perspective view of a bridge of the brake-application device.

[0030] FIG. 5 shows a diagrammatic illustration of a further exemplary embodiment of a brake-application device according to the invention.

[0031] FIG. 6 shows a section through the brake-application device according to FIG. 5 along line VI-VI in FIG. 5.

[0032] FIG. 7 shows a further variant of the brake-application device according to the invention, likewise in a perspective view.

[0033] FIG. 8 shows a longitudinal section of a further exemplary embodiment of the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

[0034] A disc brake for a utility vehicle according to the prior art is illustrated in section in FIG. 1. This disc brake has a brake disc 3 which is fastened to an axle (not shown) of the utility vehicle and which is encompassed by a brake caliper 1 which can be displaced in the direction of the brake disc 3.

[0035] Arranged in the brake caliper 1 is a brake-application device 2 by means of which brake pads 4 can be pushed against the brake disc 3 in the event of a braking situation triggered via a preferably pneumatically actuated brake cylinder.

[0036] The brake-application device 2 in this case engages with brake plungers (not illustrated) which are arranged parallel and with a spacing to one another in a bridge 8 and which are in the form of actuating spindles.

[0037] A brake lever 5 of the brake-application device 2 is operatively connected to the brake cylinder 6 and can, when actuated, pivot in the direction of the brake disc 3 about a roller 9 which runs parallel to the plane of the brake disc 3.

[0038] On the side opposite to the roller 9, the brake lever 5 bears against rolling bodies 11 which are each held in a cage and which are supported, for the one part, on the brake lever 5 which is in the form of an eccentric 7 in this region, and, for the other part, on an inner wall of the brake caliper 1.

[0039] The roller 9, as a constituent part of a roller bearing assembly, serves as rotary bearing for the brake lever 5 and lies in a bearing shell 10 of the eccentric 7. In this case, the cross section of the bearing shell 10 is adapted to the cross-sectional contour of the roller 9 in the same way as a concave channel 12 in which the roller 9 lies.

[0040] FIGS. 2-8 show embodiment variants of the brake-application device 2, which, according to the invention, have at least one securing element which is connected to the bridge 8 and to the roller 9.

[0041] The bridge 8 is depicted as a detail of the brake-application device 2 in FIGS. 2-4. In this example, the securing element consists of a clamping sleeve 13 which is plugged both into a bore 14 in the bridge 8 in the region of the channel 12 and into a bore 14 in the roller 9 and which is held therein in a frictionally locking manner.

[0042] In the variant shown in FIGS. 5 and 6, two coaxially oriented rollers 9 are connected to the bridge 8 by the securing elements, the two rollers 9 being arranged with a spacing to one another so as to form an intermediate space. In this example, the securing elements are also in the form of clamping sleeves 13.

[0043] A further configuration of the brake-application device 2 according to the invention is depicted in FIG. 7. In said figure, it is possible to see the bridge 8 with the two rollers 9, which are each pressed, by way of their mutually averted end regions, into eyelets 15 of the bridge 8 and are held therein in a frictionally locking manner. These eyelets 15 are a constituent part of the bridge 8, that is to say that they are also formed integrally during the production of the bridge 8.

[0044] Lastly, FIG. 8 shows an embodiment of the invention in which a sheet-metal part 16 is provided as securing element and is pressed into a groove 17 of the bridge 8 and into a groove 17 of the roller 9 and thus a frictionally locking connection is produced.

LIST OF REFERENCE SIGNS

[0045] 1 Brake caliper [0046] 2 Brake-application device [0047] 3 Brake disc [0048] 4 Brake pad [0049] 5 Brake lever [0050] 6 Brake cylinder [0051] 7 Eccentric [0052] 8 Bridge [0053] 9 Roller [0054] 10 Bearing shell [0055] 11 Rolling body [0056] 12 Channel [0057] 13 Clamping sleeve [0058] 14 Bore [0059] 15 Eyelet [0060] 16 Sheet-metal part [0061] 17 Groove