Multi-Piston Brake Disengagement With Dual-Sided Disc Compression
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Solution Overview
Problem
Existing piston disengagement systems for vehicle brake mechanisms often require complex external force flows to actuate the brake, which can lead to reduced braking force efficiency and increased space requirements within the vehicle.
Innovation Solution
A multi-piston disengagement system with an annular housing and multiple hydraulic actuating arrangements, where each actuating arrangement includes a piston assembly with a hydraulically movable piston and a spring assembly for return stroke, allowing for simultaneous actuation of a brake device from both axial directions without external force flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional piston disengagement system is used, then the brake can be actuated, but complex external force flows are required which reduce braking force efficiency
Solution Approach 1:
The system is divided into multiple independent actuating arrangements (first and second actuating arrangements with respective pistons), each capable of generating braking force independently. This segmentation eliminates the need for complex external force flows by distributing the actuation function across multiple localized units, thereby improving braking force efficiency while reducing overall system complexity.
Solution Approach 2:
The first and second actuating arrangements are merged into a single integrated system that acts on the same disc pack arrangement. By combining multiple actuating arrangements within one housing and having them work simultaneously on the friction discs, the system achieves high braking force efficiency without requiring complex external force transmission paths.
2Volume of moving object
If a conventional piston disengagement system is used, then the brake can be actuated, but increased space requirements result within the vehicle
Solution Approach 1:
The first and second actuating arrangements are nested within a single annular housing, with both pistons and their respective components contained within the same structural envelope. This nesting approach significantly reduces the overall space requirements compared to conventional systems that would require separate housings for each actuating arrangement, while maintaining full brake actuation capability.
Solution Approach 2:
The actuating arrangements are arranged in different axial directions (first piston in first axial direction, second piston in second axial direction), utilizing the axial dimension to pack multiple actuation mechanisms into a compact radial footprint. This dimensional arrangement reduces the overall volume required while preserving complete brake actuation functionality.
3Force
If multiple pistons are arranged in the circumferential direction, then braking force is maximized, but the housing becomes more complex
Solution Approach 1:
The annular housing serves multiple functions simultaneously: it contains both the first and second actuating arrangements, provides structural support for the disc pack arrangement, and facilitates the transmission of braking forces. This multi-functionality reduces housing complexity despite the presence of multiple pistons arranged in the circumferential direction, while maintaining high braking force levels.
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 system effectively generates a high braking force by pressing friction discs together from both sides, maximizing force level while minimizing space and avoiding external force flow, thus enhancing braking efficiency and compactness.
Implementation Method 1
A fluid, for example, a hydraulic fluid, may be introduced into the flow channel through the fluid inlet and flow from there into the pressure chambers
Implementation Method 2
Each actuating arrangement may include a spring assembly which includes a return device. The return device may be designed to reset the piston of the respective actuating arrangement
Implementation Method 3
The actuating force causes the friction discs of the disc pack arrangement to be pressed together in a frictional-fitting manner to generate a braking force
Data Source
AI summary
A multi-piston disengagement system for a vehicle brake mechanism includes an annular housing. The annular housing includes a main axis defining an axial direction and an axial opposite direction, and a plurality of housing sections. Each of the plurality of housing sections includes a pressure chamber arranged to be filled with a fluid and an actuating arrangement. The actuating arrangement includes a first piston assembly having a first piston that, when subjected to a hydraulic pressure, is movable in a first actuation stroke to introduce a first actuating force into a brake device of the vehicle brake mechanism, and a second piston assembly having a second piston that, when subjected to a hydraulic pressure, is movable in a second actuation stroke to introduce a second actuating force into the brake device of the vehicle brake mechanism.