Electromechanical Brake Device with Elastic Component for Pressure Peak Absorption
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Solution Overview
Problem
Conventional electromechanical braking devices suffer from rigidity issues during pressure peaks in the master brake cylinder, leading to potential damage and reduced service life, especially during ABS control.
Innovation Solution
Incorporating an elastic component, such as a disk spring or sliding sleeve, within the force transmission path of the electromechanical braking device, which compresses during pressure peaks above a predetermined threshold, absorbing the sudden increase in force and reducing the risk of damage by allowing elastic behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electromechanical braking device is equipped with high rigidity components, then controllability is improved, but damage risk during pressure peaks increases
Solution Approach 1:
The braking device dynamically adjusts its rigidity characteristics by incorporating an elastic component that remains rigid under normal operating conditions but becomes compliant when pressure exceeds a predetermined threshold. This allows the system to maintain high controllability during normal operation while automatically reducing rigidity during pressure peaks to prevent damage to plastic teeth and other components.
Solution Approach 2:
The system changes its mechanical parameter (rigidity) based on operating conditions. The elastic component is designed with specific force-deflection characteristics that cause it to transition from a rigid state during normal braking to a compliant state during pressure peaks, thereby protecting the transmission mechanism while maintaining controllability during normal operation.
2Stability of the object's composition
If the electromechanical braking device is made rigid, then structural stability is improved, but service life during ABS control is reduced
Solution Approach 1:
The elastic component acts as a pre-designed cushioning element that is integrated into the force transmission path. During ABS control operations, when pressure peaks occur, this element absorbs the excessive forces before they can damage the plastic teeth and other transmission components, thereby significantly extending the service life of the braking device while maintaining structural stability during normal operation.
3Adaptability or versatility
If rigidity is reduced to compensate for return volume, then elastic behavior is improved, but controllability may be compromised
Solution Approach 1:
The system achieves dynamic adaptability where the elastic component provides compliance only when needed (during pressure peaks exceeding the threshold). During normal braking operations, the component maintains sufficient rigidity to ensure precise controllability. This dynamic behavior allows the system to compensate for return volume during ABS control without compromising normal braking controllability.
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
The solution significantly reduces the risk of damage to components by absorbing pressure peaks, extending the service life of the braking device while maintaining high rigidity below the saturation point and improving controllability, especially during pulsations caused by return delivery.
Implementation Method 1
the electromechanical braking device according to the invention combines the advantages of good controllability due to its being equipped with the electric motor and low rigidity when pressure peaks occur in the master brake cylinder... The significantly reduced rigidity of the electromechanical brake device can be used in particular to compensate for a return volume during ABS control. In this way, an emerging return volume can be absorbed elastically.
Data Source
Figure 1~2
AI summary
The invention relates to an electromechanical brake device (10) for a brake system having a brake master cylinder (12) and having an electric motor (14), an adjustable output rod (16), and a gear unit (18). The electric motor (14) is connected to the output rod (16) at least via the gear unit (18), in such a manner that a force transmission path exists, via which a motor power (Fb) can be transmitted at least in part to the output rod (16) in such a manner that the output rod (16) can be adjusted. The electromechanical brake device (10) comprises at least one elastic component (24) arranged in the force transmission path and designed such that the at least one elastic component (24) cannot be compressed below a control point of the electromechanical brake device (10, 50), but the at least one elastic component (24) can be compressed in the event pressure peaks above the control point of the electromechanical brake device (10) appear in the brake master cylinder (12). The invention also relates to a brake system for a vehicle.