Brake Disc Spring Retention Without a Corrosion-Prone Hub Groove
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Solution Overview
Problem
Conventional brake disc arrangements for vehicles require a groove on the hub for retaining rings, which is prone to corrosion and debris accumulation, complicating the assembly process and increasing complexity.
Innovation Solution
The brake disc arrangement features inwardly facing cavities that partially contain the spring assembly, eliminating the need for an outer groove and utilizing spring force for retention, allowing for a simpler and cleaner assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a groove on the hub is used for retaining rings, then the brake disc can be retained on the hub, but the groove is prone to corrosion and debris accumulation, requiring cleaning and increasing assembly complexity
Solution Approach 1:
The invention extracts the retaining ring and groove from the hub structure. Instead of having a groove on the hub for the retaining ring, the solution moves the retention mechanism to the brake disc itself through inwardly facing cavities that partially contain the spring assembly, eliminating the groove from the hub surface where it would accumulate debris and corrode
Solution Approach 2:
The invention introduces an intermediary structure - the inwardly facing cavities in the brake disc - that serves as the retention mechanism. These cavities act as mediators between the spring assembly and the brake disc structure, providing retention without requiring a groove on the hub
2Ease of manufacture
If a groove on the hub is used for retaining rings, then the brake disc can be assembled to the hub, but the assembly process becomes more complex due to cleaning requirements
Solution Approach 1:
By removing the groove from the hub structure and relocating the retention mechanism to the brake disc cavities, the invention eliminates the need for cleaning operations on the hub groove, thereby simplifying the assembly process while maintaining retention functionality
Solution Approach 2:
The inwardly facing cavities in the brake disc provide self-contained retention for the spring assembly. The spring force automatically secures the assembly within the cavities without requiring external grooves or additional cleaning/maintenance interventions
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 facilitates easier assembly and replacement of the brake disc assembly by eliminating corrosion-prone grooves and debris collection, while maintaining effective axial connection and retention of the spring assembly.
Implementation Method 1
The spring assembly is partially contained in one or more cavities (24) of the inwardly facing circumference (22), such that displacement of the spring assembly in axial directions is prevented
Data Source
Figure 1
Figure 2
Figure 3a~3b
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).