Parallel-Axis Carrier Assembly for Vehicle Brake Actuator Stiffness
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Solution Overview
Problem
Existing vehicle brake actuator assemblies lack sufficient stiffness to effectively absorb reaction forces and torques, leading to inefficiencies and reduced responsiveness in braking systems.
Innovation Solution
A carrier assembly with a plate-like frame part that integrates a planetary gear stage and an electric motor, featuring parallel center axes for compactness and high stiffness, along with anti-rotation and centring devices to ensure precise torque transmission and support, and additional fastening interfaces for a spindle drive and locking assembly, allowing for efficient energy transfer and precise braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional carrier assembly design is used, then the structure is simpler, but the stiffness is insufficient to effectively absorb reaction forces and torques
Solution Approach 1:
The patent combines the planetary gear stage and electric motor mounting functions into a single integrated plate-like frame part. This merging of functions increases stiffness by eliminating separate carrier components while maintaining structural simplicity through functional integration.
Solution Approach 2:
The patent transitions from a traditional multi-component carrier assembly to a plate-like frame part with parallel center axes arrangement. This dimensional reorganization places the receiving space and fastening interface in parallel planes, maximizing stiffness in the torque transmission direction while minimizing overall structural complexity.
2Volume of moving object
If the center axes are arranged non-parallel, then more space is available for component placement, but the structure becomes less compact and takes up more space on the vehicle
Solution Approach 1:
The patent arranges the center axis of the receiving space and the center axis of the first fastening interface in parallel, utilizing a compact spatial configuration. This parallel arrangement optimizes the use of available space within the actuator assembly housing, achieving a compact design that minimizes vehicle space occupation while maintaining functional integrity.
3Use of energy by moving object
If the carrier assembly lacks anti-rotation and centring devices, then the structure is simpler, but torque transmission becomes inaccurate and energy transfer is inefficient
Solution Approach 1:
The patent incorporates anti-rotation and centring devices directly into the fastening interface structure, allowing the interface itself to perform the functions of torque alignment and rotation prevention. This self-service approach ensures accurate torque transmission and efficient energy transfer while avoiding the need for separate alignment mechanisms.
Data Source
AI summary
A carrier assembly for an actuator assembly for a vehicle brake is described. It comprises a plate-like frame part which has a receiving space for a planetary gear stage and a first fastening interface for an electric motor. A centre axis of the receiving space and a centre axis of the first fastening interface run generally parallel. In addition, a drive assembly for an actuator assembly for a vehicle brake is proposed which has such a carrier assembly. An actuator assembly with a drive assembly of this type is moreover presented.