Annular Multi-Piston Brake Actuation for Compact Transmission Housings
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Solution Overview
Problem
Existing piston disengagement systems for vehicle brakes and clutches in electric drive trains are not efficiently integrated into the vehicle's space constraints, particularly in wet-running environments, and require additional housing components to support the release force.
Innovation Solution
A multi-piston disengagement system with an annular housing and hydraulic actuation assemblies that dissipate actuating force into the annular housing, using a pressure transmission device to actuate a brake apparatus without additional housing components, allowing for a space-saving and force-free installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If additional housing components are used to support the release force of the brake apparatus, then the structural stability is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent merges the function of supporting release force into the annular housing itself, which also serves as the mounting structure for the piston assemblies. The annular housing integrates both structural support and mechanical function, eliminating the need for separate housing components to support brake release forces.
Solution Approach 2:
The annular housing is designed to perform multiple functions simultaneously: it provides structural stability, supports the release force of the brake apparatus, and serves as the mounting structure for the piston assemblies. This multi-functionality reduces the overall number of components needed in the system.
2Stability of the object's composition
If additional housing components are used to support the release force of the brake apparatus, then the structural stability is improved, but the space requirements increase
Solution Approach 1:
The patent merges the function of supporting release force into the annular housing itself, which also serves as the mounting structure for the piston assemblies. The annular housing integrates both structural support and mechanical function, eliminating the need for separate housing components to support brake release forces.
Solution Approach 2:
The annular housing is designed to perform multiple functions simultaneously: it provides structural stability, supports the release force of the brake apparatus, and serves as the mounting structure for the piston assemblies. This multi-functionality reduces the overall number of components needed in the system.
3Ease of operation
If the brake apparatus is actuated in an axial force-free manner, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical actuation systems that require external force application with a hydraulic actuation system. Hydraulic fluid pressure is used to actuate the piston assemblies, eliminating the need for complex mechanical force transmission mechanisms and making the brake apparatus easier to operate.
Solution Approach 2:
The patent uses hydraulic actuation where fluid pressure is applied to the piston assemblies to activate the brake apparatus. This hydraulic system provides smooth, controlled actuation without requiring complex mechanical linkages or external force application mechanisms.
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 efficient actuation of brake apparatuses in a compact and force-free manner, integrating seamlessly into the vehicle's transmission housing without additional support components, enhancing space utilization and operational efficiency.
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 actuation assembly may have a spring assembly which includes a return device. The return device may be designed to return the piston of the respective actuation assembly to the starting position
Implementation Method 3
The actuating force can cause friction discs of the disc pack arrangement to be pressed together in a frictionally engaged manner to generate a braking force
Data Source
AI summary
A multi-piston disengagement system for a vehicle brake device includes an annular housing with a plurality of housing portions, each of the housing portions having a respective pressure chamber and a respective hydraulic actuation assembly. Each hydraulic actuation assembly has a piston assembly with a hydraulically movable piston arranged to execute an actuation stroke in the axial direction to generate an actuating force for actuating a brake apparatus of the vehicle brake device, and the annular housing is arranged to dissipate the actuating force. The multi-piston disengagement system may have a pressure transmission device with a connecting device and a traction device operatively connected to the connecting device. The actuating force can be introduced into the connecting device and the traction device can be transferred into a pressure position for exerting an axially directed pressure force against a disc pack arrangement of the brake apparatus during the actuating stroke.