Brake Disc Cavity Retention for Groove-Free Hub Assembly
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Solution Overview
Problem
Conventional brake disc arrangements face challenges in assembly due to corrosion and debris accumulation in grooves on the hub, and existing solutions lack axial stopping features, increasing complexity during assembly.
Innovation Solution
The brake disc arrangement features an inwardly facing circumference with cavities that partially contain the spring assembly, allowing it to abut lateral walls and eliminate the need for an outer groove, enabling easy assembly and retention without additional retention means, using a spring force to connect the spring assembly to the brake disc.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a groove is arranged on the hub for assembly of the retaining ring, then the spring assembly can be retained, but the groove is subject to corrosion and debris accumulation requiring cleaning
Solution Approach 1:
The invention extracts the spring assembly from the groove-based retention system and relocates it to be contained within cavities in the brake disc. This removes the spring assembly from the harmful environment of the groove, eliminating corrosion and debris accumulation issues while maintaining retention functionality through the cavity containment and retaining ring mechanism.
Solution Approach 2:
The invention introduces cavities in the brake disc as an intermediary structure between the spring assembly and the hub. These cavities provide a protected environment for the spring assembly, isolating it from harmful factors while still allowing the retaining ring to function effectively in securing the spring assembly within the cavity system.
2Object-affected harmful factors
If no groove is used on the hub, then corrosion and debris issues are avoided, but stopping features in axial direction are lacking increasing assembly complexity
Solution Approach 1:
The invention transitions from axial stopping features (horizontal dimension) to radial cavity containment (vertical dimension). By using cavities that extend radially into the brake disc, the system provides stopping and retention features in the radial direction rather than relying on axial grooves, thereby avoiding corrosion issues while maintaining assembly simplicity.
Solution Approach 2:
The spring assembly itself provides the retention mechanism by being contained within the cavities and secured by the retaining ring. The system is self-contained within the brake disc structure, eliminating the need for external hub grooves or complex axial stopping features, thereby reducing assembly complexity while maintaining functionality.
3Ease of operation
If the spring assembly is contained in cavities of the brake disc, then assembly is simplified and no groove is needed, but the spring assembly must be retained in the cavities
Solution Approach 1:
The invention segments the brake disc structure by creating cavities within it, effectively dividing the solid brake disc into regions with and without cavities. This segmentation allows the spring assembly to be contained in a dedicated space within the brake disc, simplifying assembly while the retaining ring provides the necessary retention force to keep the spring assembly securely in place.
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
This design simplifies the assembly process by eliminating the need for a groove susceptible to corrosion and debris, providing a single unit part for replacement and ensuring secure connection through spring force retention, reducing assembly complexity and preventing axial displacement.
Implementation Method 1
the spring assembly is partially retained in said one or more cavities by a spring force exerted by said spring assembly towards the lateral walls of the one or more cavities
Data Source
AI summary
The brake disc arrangement (10) comprises a brake disc (20) which extends annularly about an axially extending central axis and defines an inwardly facing circumference comprising a splined portion for transferring torques between the brake disc (20) and a corresponding hub, when the brake disc arrangement (10) is mounted to the hub. The brake disc arrangement further comprises a spring assembly (30) adapted to be axially connected to the corresponding hub. The inwardly facing circumference of the brake disc (20) comprises one or more cavities (24), each cavity (24) being defined by axially opposing lateral walls (26). The spring assembly (30) is partially contained in said one or more cavities (24), such that a portion of the spring assembly (30) may abut each one out of the axially opposing lateral walls (26).