# US 2023/0053518 A1 · Assembly for a brake booster and brake booster

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2023/0053518 A1
- Document ID: US20230053518A1
- Status: Published application
- Kind: A1
- Application number: 17/892,366
- Filed: 2022-08-22
- Published: 2023-02-23
- Earliest claimed: 2021-08-20
- Assignees: ZF Active Safety GmbH
- Applicants: ZF Active Safety GmbH
- Inventors: Abdallah Ibrahim; Paul Warkentin; José Manuel Calvo Martinez; Iosu Oloriz del Rosario; Jorge Trobajo; Carlos Erviti
- Web page: https://patentgrep.com/patent/US20230053518A1

## CPC

- B60T 13/74: with electrical assistance or drive
- B60T 13/745: {acting on a hydraulic system, e.g. a master cylinder}
- B60T 13/162: {Master cylinder mechanically coupled with booster}
- F16D 1/101: {without axial retaining means rotating with the coupling}
- F16D 1/112: the interengaging parts comprising torque-transmitting surfaces, e.g. bayonet joints
- F16D 2001/103: {the torque is transmitted via splined connections}
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

An assembly for a brake booster, for example, an electromechanical brake booster, comprises a motor output shaft of an electric motor, a transmission input shaft of a transmission which can be coupled to the electric motor, and a coupling element for power-transmitting coupling of the motor output shaft to the transmission input shaft. The coupling element has internal toothing which can be operatively connected or is operatively connected to the motor output shaft and to the transmission input shaft, as well as a brake booster with an assembly.

## Claims

### Claim 1

An assembly for a brake booster, comprising a motor output shaft an electric motor, a transmission input shaft of a transmission which can be coupled to the electric motor, and a coupling element for power-transmitting coupling of the motor output shaft to the transmission input shaft, wherein the coupling element has internal toothing which can be operatively connected or is operatively connected to the motor output shaft and to the transmission input shaft.

### Claim 2 (depends on 1)

The assembly according to claim 1, wherein the motor output shaft has external toothing at least in some section or sections and/or the transmission input shaft has external toothing at least in some section or sections, wherein the external toothing of the motor output shaft and/or the external toothing of the transmission input shaft are/is designed to be complementary to the internal toothing of the coupling element.

### Claim 3 (depends on 2)

The assembly according to claim 2, wherein the internal toothing of the coupling element is in engagement or can be brought into engagement with the external toothing of the motor output shaft and/or the external toothing of the transmission input shaft.

### Claim 4 (depends on 1)

The assembly according to claim 1, wherein the coupling element and/or its internal toothing are/is designed to transmit a moment from the motor output shaft to the transmission input shaft.

### Claim 5 (depends on 1)

The assembly according to claim 1, wherein the coupling element is designed as a sleeve having an axial through-hole, wherein the internal toothing is arranged in the through-hole.

### Claim 6 (depends on 5)

The assembly according to claim 5, wherein the transmission input shaft has an end section which has external toothing and can be introduced or is introduced at least partially into the through-hole (5) of the coupling element.

### Claim 7 (depends on 5)

The assembly according to claim 5, wherein the motor output shaft has an end section which has external toothing and can be introduced or is introduced at least partially into the through-hole of the coupling element.

### Claim 8 (depends on 1)

The assembly according to claim 1, wherein the coupling element is arranged substantially between the motor output shaft and the transmission input shaft in an axial direction.

### Claim 9 (depends on 1)

The assembly according to claim 1, wherein the assembly comprises a centering element for centering and/or aligning the motor output shaft and the transmission input shaft with respect to one another.

### Claim 10 (depends on 9)

The assembly according to claim 9, wherein the centering element is arranged substantially between the motor output shaft and the transmission input shaft in the axial direction, in particular substantially between the motor output shaft and the coupling element or substantially between the transmission input shaft and the coupling element.

### Claim 11 (depends on 9)

The assembly according to claim 9 wherein, the centering element has internal toothing, which can be operatively connected or is operatively connected to the motor output shaft to the transmission input shaft.

### Claim 12 (depends on 11)

The assembly according to claim 11, wherein the internal toothing of the centering element is in engagement or can be brought into engagement with external toothing the motor output shaft or with the external toothing of the transmission input shaft.

### Claim 13 (depends on 11)

The assembly according to claim 11, wherein the internal toothing of the centering element of complementary design to the external toothing of the motor output shaft and/or the external toothing of the transmission input shaft and/or to the internal toothing of the coupling element.

### Claim 14 (depends on 9)

The assembly according to claim 9, wherein the centering element is designed as a sleeve having an axial through-hole, wherein the internal toothing is arranged in the through-hole.

### Claim 15 (depends on 14)

The assembly according to claim 14, wherein an end section of the motor output shaft having external toothing can be passed or is passed through the through-hole of the centering element, or an end section of the transmission input shaft having external toothing can be passed or is passed through the through-hole of the centering element.

### Claim 16 (depends on 9)

The assembly according to claim 9, wherein the centering element has a centering structure, and the coupling element has a counter-centering structure, which interacts with and/or corresponds to the centering structure of the centering element.

### Claim 17 (depends on 16)

The assembly according to claim 16, wherein the centering structure and the counter-centering structure are designed to effect centering and/or alignment in a radial and/or axial direction and/or in a circumferential direction.

### Claim 18 (depends on 16)

The assembly according to claim 16, wherein the centering structure and the counter-centring structure engage in one another substantially in an axial direction.

### Claim 19 (depends on 16)

The assembly according to claim 16, wherein the centering structure and/or the counter-centering structure have/has a tooth structure and/or wedge structure, wherein the tooth structure and/or wedge structure are/is designed to effect centering and/or alignment in an axial direction and/or in a circumferential direction.

### Claim 20 (depends on 16)

The assembly according to claim 16, wherein the centering structure has an inside diameter, and the counter-centering structure has an outside diameter, wherein the inside diameter of the centering structure and the outside diameter of the counter-centering structure are designed to effect radial centering and/or alignment.

### Claim 21 (depends on 9)

The assembly according to claim 9, wherein a spring is arranged effectively between the centering element and the motor output shaft in an axial direction, or a spring element is arranged effectively between the centering element and the transmission input shaft in the axial direction.

### Claim 22

(canceled)