Braking Device Fluid Memory Radial Positioning
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Solution Overview
Problem
Existing brake devices with wet-running friction coverings suffer from performance loss and heat-related damage due to oil being splashed and heated, leading to reduced friction and potential security risks.
Innovation Solution
A compact brake device design featuring a hub, inner and outer lamellae, a tooth wreath, and a fluid memory that absorbs oil, where the fluid memory is positioned radially further from the hub, allowing centrifugal force to press oil into storage, reducing oil presence in columns and minimizing heating and performance loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oil is fed into the column between inner and outer slats for wet-running braking, then braking performance is maintained, but oil is splashed and heated causing performance loss and security risks
Solution Approach 1:
The fluid memory is positioned at a different radial dimension relative to the rotating components. By placing the fluid storage radially outward from the rotation axis, the design exploits the radial dimension to separate oil storage from the braking action zone, preventing oil splashing while maintaining wet-running benefits
Solution Approach 2:
The toothed wreath serves dual functions: it provides the braking surface for the outer slats and simultaneously acts as a structural element to limit the fluid memory. This multi-functionality reduces component count and integrates fluid management into the existing braking structure
2Temperature
If fluid memory is positioned radially further from the hub, then centrifugal force presses oil into storage reducing heating, but device compactness is challenged
Solution Approach 1:
The toothed wreath is designed to perform multiple functions simultaneously: it provides the braking surface for friction, structural support for the outer slats, and acts as a radial limit for the fluid memory. This integration allows compact positioning of the fluid storage without requiring additional space-consuming components
Solution Approach 2:
The design merges the fluid memory with the space between the toothed wreath and the coat, utilizing existing structural voids for fluid storage. This eliminates the need for separate fluid reservoirs and reduces overall device volume while maintaining effective oil separation
3Device complexity
If tooth wreath limits fluid storage in axial direction, then no additional components are needed, but fluid access to columns must be maintained
Solution Approach 1:
The coat acts as a flexible or semi-rigid boundary that limits the fluid memory in the radial direction while allowing fluid communication. The coat structure provides both mechanical containment and fluid pathway integration, enabling oil flow control without additional valves or conduits
Solution Approach 2:
The toothed wreath serves as an intermediary structure between the fluid memory and the braking components. It provides both mechanical support for the braking action and controlled fluid access pathways, mediating between oil storage and oil delivery to the columns
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 design achieves a compact, closed, wet-running multi-surface friction brake with reduced idle moments and oil heating, enhancing braking efficiency and safety by minimizing oil presence in columns and utilizing the tooth wreath for both structural support and fluid storage limitation.
Implementation Method 1
the fluid memory is arranged in a radial direction further away from the hub than the column, so that when the wave is rotated, the oil is pressed from the columns into the fluid storage by the centrifugal force
Data Source
Figure 1
AI summary
The invention relates to a braking device (100) comprising: - a hub that can be attached to a shaft to be braked, - at least one inner lamella connected to the hub, - a shell (101), - a toothed ring (105), - several outer lamellae connected to the toothed ring (105), and - a fluid reservoir (110) for receiving a fluid, wherein the inner lamella is arranged between the outer lamellae, wherein a gap is arranged between the inner lamella and the outer lamellae, wherein the gaps are fluidically connected to the fluid reservoir (110), wherein the fluid reservoir (110) is arranged further away from the hub in a radial direction than the gaps, and wherein the fluid reservoir (110) is limited in a first axial direction by the toothed ring (105).