Bidirectional Brake Actuator for Integrated Lining Wear Adjustment
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Solution Overview
Problem
Existing braking devices for motor vehicles require complex adjustments of brake linings due to wear, necessitating additional components and complicated procedures.
Innovation Solution
An adjusting device is integrated within the actuator, allowing for selective actuation and adjustment of brake linings by specifying drive directions, eliminating the need for additional components and simplifying the adjustment process through a compact design with a drive sleeve and pressure pieces, and utilizing a ball screw drive for low-friction operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an additional separate adjusting device is mounted next to the actuator, then the brake lining adjustment function is achieved, but the device complexity and number of components increase
Solution Approach 1:
The adjusting device is merged with the actuator into a single integrated unit. The adjusting device is arranged in a component of the actuator, sharing common components such as the housing, drive shaft, and drive mechanism. This integration eliminates the need for separate mounting of additional components while maintaining both the actuation function and the adjusting function.
Solution Approach 2:
The actuator is designed to perform multiple functions: it can selectively actuate either the spreading actuator or the adjusting device depending on the drive direction. The same actuator components (housing, drive shaft, drive mechanism) serve both the spreading function and the adjusting function, making the system multi-functional and reducing overall component count.
2Device complexity
If the actuator is designed to drive both spreading actuator and adjusting device, then component count is reduced, but the ease of operation and selective actuation complexity increases
Solution Approach 1:
The actuator is designed with dynamic functionality to selectively drive different components based on drive direction. The actuator can be actuated in one drive direction to drive the spreading actuator, and in the opposite drive direction to drive the adjusting device. This dynamic switching capability allows a single actuator to perform multiple functions without requiring complex additional control mechanisms.
3Ease of manufacture
If the adjusting device is integrated within the actuator, then the mounting complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The adjusting device is merged with the actuator into a single integrated unit manufactured as one component or pre-assembled unit. The adjusting device is arranged in a component of the actuator, sharing common components such as the housing, drive shaft, and drive mechanism. This integration eliminates the need for separate mounting operations and reduces assembly complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables straightforward adjustment of brake linings during wear without additional components, reducing complexity and improving the braking device's configuration flexibility, while maintaining a compact and low-friction design.
Implementation Method 1
utilizing a ball screw drive for low-friction operation
Implementation Method 2
a brake element for generating a frictionally locking connection to a rotating component
Data Source
AI summary
A brake device for a motor vehicle has an actuator with a common housing for a spreading actuator, and an adjusting device. An electric motor for actuating the actuator can be driven in two rotational directions, the spreading actuator being driven in the one rotational direction, and the adjusting device being driven in the other rotational direction.