Brake Disc for a Motor Vehicle, Brake System

Abstract

A brake disk for a motor vehicle includes a friction ring and at least one insert portion. The insert portion is located within and arranged coaxially with the friction ring, and is configured so as to possess an annular disk shape and define a plurality of openings. The friction ring is configured such that material of the friction ring fills the plurality of openings.

Claims

1. A brake disk for a motor vehicle comprising: a friction ring; and at least one insert portion located within and arranged coaxially with the friction ring, said at least one insert portion being configured so as to possess an annular disk shape and define a plurality of openings; wherein the friction ring is configured such that material of the friction ring fills the plurality of openings.

2. The brake disk according to claim 1, wherein the plurality of openings are distributed uniformly over a periphery of the insert portion.

3. The brake disk according to claim 1, wherein the insert portion includes a ceramic material.

4. The brake disk according to claim 1, wherein at least one opening of the plurality of openings has a size that differs from a size of at least one other opening of the plurality of openings.

5. The brake disk according to claim 1, wherein at least one opening of the plurality of openings has a contour that differs from a contour of at least one other opening of the plurality of openings.

6. The brake disk according to claim 1, wherein the insert portion includes a plurality of projecting ribs.

7. A brake system for a motor vehicle comprising: at least one brake disk for a wheel of the motor vehicle that includes: a friction ring; and at least one insert portion located within and arranged coaxially with the friction ring, said at least one insert portion being configured so as to possess an annular disk shape and define a plurality of openings; wherein the friction ring is configured such that material of the friction ring fills the plurality of openings; and at least one actuatable brake device assigned to the brake disk.

Description

[0012] The invention is intended to be explained in greater detail below with reference to an embodiment. In the drawings:

[0013] FIG. 1 is a simplified top view of a brake system for a motor vehicle and

[0014] FIG. 2 is a simplified side view of the brake system.

[0015] FIG. 1 is a simplified cross section of a brake system 1 for a motor vehicle which is not shown here in greater detail. The brake system 1 has a brake disk 2 which can be associated with a wheel of the motor vehicle and a brake device 3 which is associated with the brake disk 2. The brake device 3 has two displaceable brake shoes 4 which can be pressed against the end faces of the brake disk 2 in order to carry out the braking operation. Such brake systems 1 are known in principle so that they are not intended to be discussed in greater detail at this point. In this instance, it should be noted that the brake disk 2 has a friction ring 5 in which two insert portions 6 are located. The friction ring 5 is constructed in an annular manner and is produced from a cast material. The insertion portions 6 are also constructed in an annular manner and are located at the inner side of the friction ring 5. The insert portions 6 are produced from a ceramic material in this instance.

[0016] FIG. 2 is a cross section of the brake disk 2 along the line A-A from FIG. 1, which is located in the plane of one of the insert portions 6. The insert portion 6 has in a state distributed over the periphery thereof openings 7, 8 and 9. The openings 7, 8 and 9 each have different contours and are arranged so as to be uniformly distributed over the periphery of the insert portion 6. The openings 7 have a lozenge-like contour, the openings 9 have a circular contour and the openings 8 have a star-like contour. Since the openings 7, 8, 9 extend completely through the material of the insert portion 6, the material of the friction ring 5 extends through the openings during the production of the brake disk 2. There are thereby produced advantageous vibration properties for the brake disk 7. As a result of the construction of the insert portion 6 or the insert portions 6 from ceramic material, the weight of the brake disk 2 is generally further reduced in this case. The vibration behavior of the brake disk can be adapted to the respective application as a result of the number and construction of the openings 7, 8 and 9. There may particularly be provision for only the openings 7 or only the openings 8 or only the openings 9 to be provided. There may also be provision for the openings 7, 8 and/or 9 to be located on the same radius of the insert portion and not, as in the present embodiment, on different radii.