# US 2021/0341024 A1 · Composite brake disc for a vehicle disc brake

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- Number: US 2021/0341024 A1
- Document ID: US20210341024A1
- Status: Published application
- Kind: A1
- Application number: 17/273,819
- Filed: 2019-09-06
- Published: 2021-11-04
- Earliest claimed: 2018-09-07
- Assignees: Continental Teves AG & Co. oHG
- Applicants: Continental Teves AG & Co. oHG
- Inventors: Frank Hollstein; Ralph Weller; Andres Valencia Blazquez
- Web page: https://patentgrep.com/patent/US20210341024A1

## CPC

- F16D 65/123: {comprising an annular disc secured to a hub member; Discs characterised by means for mounting}
- F16D 65/125: {characterised by the material used for the disc body}
- F16D 2065/1316: {radially segmented}
- F16D 2065/1328: {internal cavities, e.g. cooling channels}
- F16D 2065/1392: {Connection elements}
- F16D 2200/0021: Steel
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

A composite brake disk for a vehicle disk brake, including a brake disk pot which is formed from a first material and is connected to a friction ring made of a different material, wherein the pot shell and a circular-cylindrical collar formed on the friction ring overlap in some regions in the radial direction in a connecting region and are penetrated by a plurality of connecting elements oriented substantially orthogonally with respect to the axis of rotation, wherein the composite brake disk is suitable for transmitting high mechanical and thermal loads in all operating states, while being simple to manufacture, and can also be formed with a particularly thin pot base and, for this purpose, enables the collar to engage radially on the outside around the pot shell in the connecting region.

## Claims

### Claim 1

A composite brake disk for a vehicle disk brake, comprising:
a brake disk pot formed from a first material, and
a friction ring, which is formed from a different material and is connected to the brake disk pot,
wherein the brake disk pot has a pot base extending in a radial direction with respect to an axis of rotation, and a circular-cylindrical pot shell extending from the pot base concentrically with respect to the axis of rotation, wherein the friction ring has at least two friction surfaces oriented in the radial direction with respect to the axis of rotation, and a circular-cylindrical collar pre-stretched axially in a direction of the brake disk pot concentrically with respect to the axis of rotation, and wherein the pot shell and the collar overlap in some regions in the radial direction in a connecting region and are penetrated by a plurality of connecting elements oriented substantially orthogonally with respect to the axis of rotation, wherein the collar engages radially on the outside around the pot shell in the connecting region.

### Claim 2 (depends on 1)

The securing screw as claimed in claim 1, wherein the brake disk pot in a transition region between the pot base and the pot shell has a solid, encircling shoulder which is pre-stretched radially outward and is significantly stronger in the radial and axial directions than a base thickness of the pot base, in particular is at least twice the base thickness.

### Claim 3 (depends on 2)

The composite brake disk as claimed in claim 2, wherein the shoulder forms an axial stop for the collar.

### Claim 4 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the connecting region has a clearance fit in the radial direction.

### Claim 5 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the connecting elements are designed as rivets.

### Claim 6 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the connecting elements are designed as screw elements.

### Claim 7 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the collar and the pot shell have respective mutually aligned apertures in the connecting region for penetration by the connecting elements.

### Claim 8 (depends on 1)

The composite brake disk as claimed in claim 1, wherein an encircling bead which is pre-stretched axially in the direction of the friction ring is formed on the pot base, and axial connecting bores for penetration of wheel screws or wheel bolts are arranged in the region of the bead.

### Claim 9 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the brake disk pot is formed from a steel material.

### Claim 10 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the friction ring is perforated by a plurality of channels extending in the axial and/or radial direction.

### Claim 11 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the brake disk pot is formed from a rust-resistant steel material.

### Claim 12 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the brake disk pot is formed from a high-alloy steel material.

### Claim 13 (depends on 1)

The composite brake disk as claimed in claim 1, wherein the collar and the pot shell have respective mutually aligned bores in the connecting region for penetration by the connecting elements.