Brake Application Mechanism of a Disc Brake

Abstract

A brake application mechanism of a disc brake includes a pressure piece in contact with a brake pad, and a cylindrical threaded element that is retained on the pressure piece in such a way as to rotate therewith. The pressure piece and the threaded element that is connected thereto are designed as separate parts.

Claims

1. A brake application mechanism of a disc brake, comprising: a pressure piece which makes contact with a brake pad; and a cylindrical threaded element which is held in a rotationally fixed manner on said pressure piece, wherein the pressure piece and the threaded element that is connected thereto are configured as separate components.

2. The brake application mechanism as claimed in claim 1, wherein the threaded element is configured as a threaded sleeve.

3. The brake application mechanism as claimed in claim 2, wherein the pressure piece and the threaded element are connected fixedly to one another in an integrally joined, frictionally locking or positively locking manner.

4. The brake application mechanism as claimed in claim 1, wherein the pressure piece and the threaded element are connected fixedly to one another in an integrally joined, frictionally locking or positively locking manner.

5. The brake application mechanism as claimed in claim 1, wherein the threaded element is screwed to the pressure piece.

6. The brake application mechanism as claimed in claim 5, wherein the screw connection is secured against rotation.

7. The brake application mechanism as claimed in claim 1, wherein the pressure piece and the threaded element consist of different materials.

8. The brake application mechanism as claimed in claim 1, wherein the pressure piece and the threaded element consist of different iron materials.

9. The brake application mechanism as claimed in claim 1, wherein the threaded element and the pressure piece are connected to one another by way of rotary friction welding or fusion welding.

10. The brake application mechanism as claimed in claim 1, wherein the pressure piece is formed from cast iron.

11. The brake application mechanism as claimed in claim 1, wherein the threaded element is configured as an extruded part or a cold extruded part.

12. The brake application mechanism as claimed in claim 1, wherein the pressure piece is configured as a forged part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 shows a disc brake which is provided with a brake application mechanism according to the invention, in a sectioned plan view.

[0026] FIGS. 2A and 2B are views of a part of the brake application mechanism in different manufacturing steps, in each case in a perspective view.

DETAILED DESCRIPTION OF THE DRAWINGS

[0027] A diagrammatic illustration of a disc brake can be seen in FIG. 1, having a brake caliper 1 which engages over a brake disc 2, is configured as a sliding caliper, and in which two brake pads 3 are arranged which can be pressed against the brake disc 2 in the functional state, that is to say during a braking operation.

[0028] Here, first of all the brake application-side brake pad 3 is pressed against the brake disc 2 by means of a brake application mechanism 8, whereas subsequently, on account of the reaction forces, the reaction-side brake pad 3 is pressed against the brake disc 2 by way of the driving of the brake caliper 1 which is displaced.

[0029] Each brake pad 3 consists of a lining carrier plate 11 and a friction lining 12 which is fastened thereon and makes contact with the brake disc 2 during a braking operation.

[0030] In each case one pad holding spring 9 is fastened to the lining carrier plates 11, which pad holding springs 9, in interaction with a holding bracket 10, hold the brake pads 3 under prestress in a brake shaft of the brake caliper 1 or of a brake carrier.

[0031] The brake application mechanism 8 has a brake ram 4 which, arranged centrally, can be pressed against the brake application-side brake pad 3 in an axially displaceable manner via a brake lever 14.

[0032] Here, the brake ram 4 consists of an actuating spindle 6, to which an adjusting device 5 for compensating for an air play is connected, and a threaded sleeve 7 which engages with an internal thread into an external thread of the actuating spindle 6.

[0033] On its side which faces the lining carrier plate 11 of the brake application-side brake pad 3, the threaded spindle 7 is connected fixedly to a plate-shaped pressure piece 13 which bears against the lining carrier plate 11.

[0034] In order to prevent the threaded sleeve 7 and therefore the pressure piece 13 from corotating during a rotation of the actuating spindle 6 in order to compensate for the air play, said pressure piece 13 is held on the lining carrier plate 11 in a manner which is secured against rotation.

[0035] FIGS. 2A and 2B show, as a detail, the pressure piece 13 and the threaded sleeve 7 which forms a threaded element, which are configured as separate components according to the invention, as can be seen particularly clearly in FIG. 2A. A position is depicted here before the threaded sleeve 7 is connected fixedly to the pressure piece 13 by way of a suitable joining process. The threaded sleeve 7/pressure piece 13 structural unit is depicted in FIG. 2B in a connected arrangement, that is to say ready for use.

[0036] In the example, the threaded sleeve 7 is connected on the pressure piece 13 centrally by way of, for example, welding, such as rotary friction welding or fusion welding, identified by way of a welded seam 15.

[0037] Otherwise, an elevated ring 16 is integrally formed on the pressure piece 13 on the side which faces the threaded sleeve 7, concentrically with respect thereto, to which ring 16 a gaiter 17 which can be seen in FIG. 1 is connected in a functional state.

[0038] As has already been stated, other joining processes are also contemplated for connecting the threaded sleeve 7 and the pressure piece 13, in addition to the abovementioned integrally joined, frictionally locking or positively locking connection.

[0039] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.